Genre
Periodicals
3,883
Textbooks
1,670
Congresses
389
Statistics
111
Directories
107
Handbooks, manuals, etc
92
Juvenile literature
88
Périodiques
72
Abstracts
59
Biography
58
Bibliography
41
Catalogs
37
Sources
36
Exhibitions
35
Tables
34
Early works to 1800
33
Problems, exercises, etc
31
Dictionaries
28
Laboratory manuals
26
Guidebooks
20
Outlines, syllabi, etc
19
Patents
18
Registers
18
Yearbooks
18
Ṕeriodiques
17
Pictorial works
16
Genealogy
15
Indexes
15
Maps
15
Surveys
13
Academic theses
10
Examinations, questions, etc
10
Archives
8
Electronic journals
8
Glossaries, vocabularies, etc
8
Records and correspondence
8
Specifications
7
czasopisma
7
Academic Dissertations
6
Designs and plans
6
Portraits
6
Textbooks for foreign speakers
6
Case studies
5
Conference papers and proceedings
5
Electronic books
5
Forms
5
History
5
Periodical
5
Popular works
5
Programmed instruction
5
more ...