Format
Book
410,379
Electronic
74,423
Thesis
17,414
Government Document
13,887
Audio
8,818
Serial
8,416
Conference Proceeding
7,012
Journal
6,053
Unknown
3,415
Manuscript
2,156
Map
1,249
Musical Score
692
Kit
684
Article
646
Book Chapter
507
Physical Object
507
Reference Material
257
Photo
157
Newspaper
42