Format
Book
365,109
Unknown
19,757
Thesis
8,626
Journal
7,887
Map
6,956
Photo
6,936
Electronic
6,787
Serial
6,005
Conference Proceeding
5,060
Audio
4,182
Kit
3,086
Manuscript
2,188
Musical Score
2,105
Newspaper
764
Government Document
715
Book Chapter
551
Physical Object
230
Reference Material
146
Article
3