Format
Book
318,174
Government Document
39,484
Audio
27,449
Serial
15,337
Conference Proceeding
10,930
Journal
9,746
Electronic
9,205
Thesis
8,460
Manuscript
6,564
Map
2,519
Kit
1,633
Unknown
1,554
Book Chapter
879
Musical Score
658
Photo
410
Newspaper
290
Physical Object
128
Reference Material
63
Article
15