diff --git a/src/org/geometerplus/android/fbreader/api/Api.java b/src/org/geometerplus/android/fbreader/api/Api.java
index 52263ee0d..328900836 100644
--- a/src/org/geometerplus/android/fbreader/api/Api.java
+++ b/src/org/geometerplus/android/fbreader/api/Api.java
@@ -17,16 +17,26 @@ public interface Api {
 	String getOptionValue(String group, String name) throws ApiException;
 	void setOptionValue(String group, String name, String value) throws ApiException;
 
-	// book information
+	// book information for current book
 	String getBookLanguage() throws ApiException;
 	String getBookTitle() throws ApiException;
 	//List<String> getBookAuthors() throws ApiException;
 	List<String> getBookTags() throws ApiException;
 	String getBookFilePath() throws ApiException;
 	String getBookHash() throws ApiException;
-	String getBookId() throws ApiException;
+	String getBookUniqueId() throws ApiException;
 	Date getBookLastTurningTime() throws ApiException;
 
+	// book information for book defined by id
+	String getBookLanguage(long id) throws ApiException;
+	String getBookTitle(long id) throws ApiException;
+	//List<String> getBookAuthors(long id) throws ApiException;
+	List<String> getBookTags(long id) throws ApiException;
+	String getBookFilePath(long id) throws ApiException;
+	String getBookHash(long id) throws ApiException;
+	String getBookUniqueId(long id) throws ApiException;
+	Date getBookLastTurningTime(long id) throws ApiException;
+
 	// text information
 	int getParagraphsNumber() throws ApiException;
 	int getElementsNumber(int paragraphIndex) throws ApiException;
diff --git a/src/org/geometerplus/android/fbreader/api/ApiClientImplementation.java b/src/org/geometerplus/android/fbreader/api/ApiClientImplementation.java
index d426cb0f4..de5277dba 100644
--- a/src/org/geometerplus/android/fbreader/api/ApiClientImplementation.java
+++ b/src/org/geometerplus/android/fbreader/api/ApiClientImplementation.java
@@ -229,14 +229,42 @@ public class ApiClientImplementation implements ServiceConnection, Api, ApiMetho
 		return requestString(GET_BOOK_HASH, EMPTY_PARAMETERS);
 	}
 
-	public String getBookId() throws ApiException {
-		return requestString(GET_BOOK_ID, EMPTY_PARAMETERS);
+	public String getBookUniqueId() throws ApiException {
+		return requestString(GET_BOOK_UNIQUE_ID, EMPTY_PARAMETERS);
 	}
 
 	public Date getBookLastTurningTime() throws ApiException {
 		return requestDate(GET_BOOK_LAST_TURNING_TIME, EMPTY_PARAMETERS);
 	}
 
+	public String getBookLanguage(long id) throws ApiException {
+		return requestString(GET_BOOK_LANGUAGE, EMPTY_PARAMETERS);
+	}
+
+	public String getBookTitle(long id) throws ApiException {
+		return requestString(GET_BOOK_TITLE, EMPTY_PARAMETERS);
+	}
+
+	public List<String> getBookTags(long id) throws ApiException {
+		return requestStringList(GET_BOOK_TAGS, EMPTY_PARAMETERS);
+	}
+
+	public String getBookFilePath(long id) throws ApiException {
+		return requestString(GET_BOOK_FILE_PATH, EMPTY_PARAMETERS);
+	}
+
+	public String getBookHash(long id) throws ApiException {
+		return requestString(GET_BOOK_HASH, EMPTY_PARAMETERS);
+	}
+
+	public String getBookUniqueId(long id) throws ApiException {
+		return requestString(GET_BOOK_UNIQUE_ID, EMPTY_PARAMETERS);
+	}
+
+	public Date getBookLastTurningTime(long id) throws ApiException {
+		return requestDate(GET_BOOK_LAST_TURNING_TIME, EMPTY_PARAMETERS);
+	}
+
 	public TextPosition getPageStart() throws ApiException {
 		return requestTextPosition(GET_PAGE_START, EMPTY_PARAMETERS);
 	}
diff --git a/src/org/geometerplus/android/fbreader/api/ApiMethods.java b/src/org/geometerplus/android/fbreader/api/ApiMethods.java
index 4341bc910..08941341f 100644
--- a/src/org/geometerplus/android/fbreader/api/ApiMethods.java
+++ b/src/org/geometerplus/android/fbreader/api/ApiMethods.java
@@ -27,7 +27,7 @@ interface ApiMethods {
 	int GET_BOOK_TAGS = 504;
 	int GET_BOOK_FILE_PATH = 505;
 	int GET_BOOK_HASH = 506;
-	int GET_BOOK_ID = 507;
+	int GET_BOOK_UNIQUE_ID = 507;
 	int GET_BOOK_LAST_TURNING_TIME = 508;
 
 	// text information
diff --git a/src/org/geometerplus/android/fbreader/api/ApiObject.java b/src/org/geometerplus/android/fbreader/api/ApiObject.java
index 7472864a3..8d6623f65 100644
--- a/src/org/geometerplus/android/fbreader/api/ApiObject.java
+++ b/src/org/geometerplus/android/fbreader/api/ApiObject.java
@@ -18,6 +18,7 @@ public abstract class ApiObject implements Parcelable {
 		int STRING = 2;
 		int BOOLEAN = 3;
 		int DATE = 4;
+		int LONG = 5;
 		int TEXT_POSITION = 10;
 	}
 
@@ -52,6 +53,25 @@ public abstract class ApiObject implements Parcelable {
 		}
 	}
 
+	static class Long extends ApiObject {
+		final long Value;
+
+		Long(long value) {
+			Value = value;
+		}
+
+		@Override
+		protected int type() {
+			return Type.LONG;
+		}
+
+		@Override
+		public void writeToParcel(Parcel parcel, int flags) {
+			super.writeToParcel(parcel, flags);
+			parcel.writeLong(Value);
+		}
+	}
+
 	static class Boolean extends ApiObject {
 		final boolean Value;
 
@@ -175,6 +195,8 @@ public abstract class ApiObject implements Parcelable {
 						return Void.Instance;
 					case Type.INT:
 						return new Integer(parcel.readInt());
+					case Type.LONG:
+						return new Long(parcel.readLong());
 					case Type.BOOLEAN:
 						return new Boolean(parcel.readByte() == 1);
 					case Type.DATE:
diff --git a/src/org/geometerplus/android/fbreader/api/ApiServerImplementation.java b/src/org/geometerplus/android/fbreader/api/ApiServerImplementation.java
index 7a81a5ae4..a229fec5c 100644
--- a/src/org/geometerplus/android/fbreader/api/ApiServerImplementation.java
+++ b/src/org/geometerplus/android/fbreader/api/ApiServerImplementation.java
@@ -67,17 +67,41 @@ public class ApiServerImplementation extends ApiInterface.Stub implements Api, A
 					);
 					return ApiObject.Void.Instance;
 				case GET_BOOK_LANGUAGE:
-					return ApiObject.envelope(getBookLanguage());
+					if (parameters.length == 0) {
+						return ApiObject.envelope(getBookLanguage());
+					} else {
+						return ApiObject.envelope(getBookLanguage(((ApiObject.Long)parameters[0]).Value));
+					}
 				case GET_BOOK_TITLE:
-					return ApiObject.envelope(getBookTitle());
+					if (parameters.length == 0) {
+						return ApiObject.envelope(getBookTitle());
+					} else {
+						return ApiObject.envelope(getBookTitle(((ApiObject.Long)parameters[0]).Value));
+					}
 				case GET_BOOK_FILE_PATH:
-					return ApiObject.envelope(getBookFilePath());
+					if (parameters.length == 0) {
+						return ApiObject.envelope(getBookFilePath());
+					} else {
+						return ApiObject.envelope(getBookFilePath(((ApiObject.Long)parameters[0]).Value));
+					}
 				case GET_BOOK_HASH:
-					return ApiObject.envelope(getBookHash());
-				case GET_BOOK_ID:
-					return ApiObject.envelope(getBookId());
+					if (parameters.length == 0) {
+						return ApiObject.envelope(getBookHash());
+					} else {
+						return ApiObject.envelope(getBookHash(((ApiObject.Long)parameters[0]).Value));
+					}
+				case GET_BOOK_UNIQUE_ID:
+					if (parameters.length == 0) {
+						return ApiObject.envelope(getBookUniqueId());
+					} else {
+						return ApiObject.envelope(getBookUniqueId(((ApiObject.Long)parameters[0]).Value));
+					}
 				case GET_BOOK_LAST_TURNING_TIME:
-					return ApiObject.envelope(getBookLastTurningTime());
+					if (parameters.length == 0) {
+						return ApiObject.envelope(getBookLastTurningTime());
+					} else {
+						return ApiObject.envelope(getBookLastTurningTime(((ApiObject.Long)parameters[0]).Value));
+					}
 				case GET_PARAGRAPHS_NUMBER:
 					return ApiObject.envelope(getParagraphsNumber());
 				case GET_ELEMENTS_NUMBER:
@@ -192,7 +216,7 @@ public class ApiServerImplementation extends ApiInterface.Stub implements Api, A
 		return myReader.Model.Book.getContentHashCode();
 	}
 
-	public String getBookId() {
+	public String getBookUniqueId() {
 		// TODO: implement
 		return null;
 	}
@@ -202,6 +226,41 @@ public class ApiServerImplementation extends ApiInterface.Stub implements Api, A
 		return null;
 	}
 
+	public String getBookLanguage(long id) {
+		// TODO: implement
+		return null;
+	}
+
+	public String getBookTitle(long id) {
+		// TODO: implement
+		return null;
+	}
+
+	public List<String> getBookTags(long id) {
+		// TODO: implement
+		return Collections.emptyList();
+	}
+
+	public String getBookFilePath(long id) {
+		// TODO: implement
+		return null;
+	}
+
+	public String getBookHash(long id) {
+		// TODO: implement
+		return null;
+	}
+
+	public String getBookUniqueId(long id) {
+		// TODO: implement
+		return null;
+	}
+
+	public Date getBookLastTurningTime(long id) {
+		// TODO: implement
+		return null;
+	}
+
 	// page information
 	public TextPosition getPageStart() {
 		return getTextPosition(myReader.getTextView().getStartCursor());