Genre
Congresses
6,499
Conference papers and proceedings
4,804
Periodicals
4,697
Guidebooks
3,169
Electronic books
2,970
Maps
2,915
History
1,548
Biography
1,260
Bibliography
1,211
Academic theses
916
Dictionaries
769
Biographies
738
Juvenile literature
669
Early works to 1800
663
Thèses et écrits académiques
611
Pictorial works
569
Catalogs and collections
558
Bibliographies
487
Catalogs
484
Early works
398
Classification
391
Electronic journals
376
Nomenclature
340
Juvenile works
338
Textbooks
332
Academic Dissertation
323
Festschriften
320
Terminology
284
dissertations
281
Handbooks, manuals, etc
275
doctoral dissertations
261
masters theses
261
theses
261
Abstracts
250
Geological maps
245
Périodiques
234
CD-ROMs
204
Handbooks and manuals
204
Observations
202
Directories
199
Popular works
191
Databases
177
Surveys
176
Aufsatzsammlung
151
Indexes
149
Atlases
141
Technical reports
140
Tables
139
Périodiques
137
Encyclopedias
134
more ...