نوع المادة
Congresses
2,119
Conference papers and proceedings
1,706
History
1,120
Electronic books
1,013
Periodicals
909
Technical reports
305
Handbooks, manuals, etc
179
Early works to 1800
169
Biography
166
Pictorial works
155
Handbooks and manuals
126
Case studies
119
Legislative hearings
114
Dictionaries
113
Printed ephemera
112
Early works
105
Biographies
96
Tables
96
Bibliography
94
Interviews
86
Congrès
83
Maps
83
Sources
78
Statistics
67
Academic theses
65
Surveys
61
Exhibitions
57
Congrès
52
Exhibition catalogs
47
Bibliographies
46
Government publications
45
Tables (Data)
45
Illustrated works
38
Electronic journals
33
World's fairs
31
Video recordings
30
Electronic book
29
Directories
28
Juvenile literature
27
Thèses et écrits académiques
27
Abstracts
26
Catalogs
26
Internet resource
25
Personal narratives
25
Documentary films
24
Broadsides
23
Festschriften
23
Congress
21
Guidebooks
20
Périodiques
20
المزيد ...