Format
Book
737,867
Electronic
129,685
Map
22,157
Manuscript
17,020
Unknown
9,331
Thesis
6,353
Kit
5,315
Book Chapter
1,607
Journal
1,581
Conference Proceeding
1,348
Photo
1,319
Musical Score
1,117
Newspaper
852
Serial
363
Audio
275
Government Document
55
Physical Object
52
Reference Material
29
Article
12