Format
Book
38,713,336
Government Document
1,785,543
Electronic
1,692,187
Serial
1,378,600
Thesis
1,345,427
Audio
1,099,307
Unknown
814,667
Journal
744,126
Musical Score
735,936
Conference Proceeding
726,132
Map
568,689
Manuscript
289,081
Kit
238,835
Book Chapter
205,056
Photo
174,695
Newspaper
62,531
Reference Material
51,617
Physical Object
9,311
Article
1,971