Format
Book
964,077
Photo
22,837
Journal
19,448
Unknown
18,184
Conference Proceeding
17,274
Kit
9,416
Serial
7,385
Electronic
7,334
Thesis
7,207
Audio
5,756
Manuscript
4,084
Map
3,749
Musical Score
2,417
Government Document
2,311
Physical Object
1,322
Reference Material
449
Newspaper
437
Book Chapter
353
Article
19