Format
Book
1,190,798
Audio
48,302
Musical Score
32,004
Conference Proceeding
31,244
Serial
16,577
Journal
16,456
Unknown
16,152
Electronic
9,753
Map
5,561
Book Chapter
3,960
Thesis
2,524
Manuscript
2,357
Kit
1,926
Photo
878
Newspaper
557
Government Document
359
Reference Material
142
Physical Object
33
Article
24