Genre
Congresses
253
Biography
192
Periodicals
99
Bibliography
98
Sources
47
Classification
45
Dictionaries
32
Problems, exercises, etc
29
Handbooks, manuals, etc
23
Textbooks for foreign speakers
19
Terminology
18
Catalogs
16
Popular works
15
Maps
14
Bio-bibliography
12
Folklore
11
Correspondence
10
Guidebooks
10
Early works to 1800
9
Fiction
9
Poetry
9
Texts
9
Atlases
8
Chronology
8
Readers
8
Tables
8
Nomenclature
7
Personal narratives, Russian
7
Statistics
7
Terms and phrases
7
Observations
6
History
5
Abstracts
4
Case studies
4
Controversial literature
4
Literatures
4
Miscellanea
4
Diaries
3
Identification
3
Personal narratives
3
Périodiques
3
Bibliographies
2
Charts, diagrams, etc
2
Conversation and phrase books
2
Early works to 1900
2
Glossaries, vocabularies, etc
2
Laboratory manuals
2
Observers' manuals
2
Pictorial works
2
Transliteration into Russian
2
more ...