Format
Book
547,583
Map
249,881
Government Document
57,071
Conference Proceeding
14,479
Serial
11,632
Electronic
11,543
Journal
9,592
Thesis
8,693
Unknown
8,374
Audio
2,069
Book Chapter
1,414
Manuscript
667
Kit
536
Photo
481
Musical Score
349
Physical Object
273
Reference Material
269
Article
75
Newspaper
26