Format
Book
473,121
Conference Proceeding
11,023
Unknown
7,162
Photo
5,809
Electronic
5,141
Journal
5,091
Thesis
4,962
Serial
4,884
Map
4,541
Audio
3,938
Kit
2,980
Manuscript
2,396
Musical Score
1,671
Government Document
1,106
Book Chapter
861
Newspaper
346
Reference Material
134
Physical Object
67
Article
14