Format
Book
547,341
Map
249,821
Government Document
57,055
Conference Proceeding
14,469
Serial
11,633
Electronic
11,543
Journal
9,590
Thesis
8,693
Unknown
8,372
Audio
2,069
Book Chapter
1,414
Manuscript
667
Kit
536
Photo
481
Musical Score
349
Reference Material
274
Physical Object
273
Article
75
Newspaper
26