Format
Book
634,190
Musical Score
284,754
Audio
147,631
Manuscript
23,347
Thesis
22,917
Electronic
14,992
Unknown
10,859
Journal
6,120
Conference Proceeding
4,775
Serial
4,027
Map
2,354
Government Document
1,315
Book Chapter
1,130
Newspaper
1,067
Kit
1,056
Physical Object
1,041
Photo
276
Reference Material
48