نوع المادة
Bibliography
11
Biography
10
Sources
10
Congresses
4
Correspondence
3
Criticism, interpretation, etc
2
Stories, plots, etc
2
Translations
2
Archives
1
Catalogs
1
Diaries
1
Dictionaries
1
Early works to 1800
1
Fiction
1
Handbooks, manuals, etc
1
Periodicals
1
Texts
1
Translations into Oriental languages
1