Format
Book
342,244
Map
51,008
Government Document
42,400
Unknown
9,999
Thesis
9,745
Electronic
8,272
Conference Proceeding
6,144
Serial
6,030
Journal
3,891
Manuscript
3,821
Audio
2,403
Musical Score
2,318
Physical Object
565
Kit
375
Photo
259
Article
239
Reference Material
124
Book Chapter
112
Newspaper
8