Format
Book
868,325
Unknown
36,300
Electronic
33,516
Audio
17,184
Conference Proceeding
16,879
Musical Score
15,187
Journal
9,820
Serial
8,247
Thesis
6,776
Map
4,921
Manuscript
4,808
Government Document
2,740
Kit
659
Book Chapter
522
Physical Object
194
Newspaper
177
Reference Material
169
Photo
148
Article
2