Format
Book
318,570
Government Document
39,470
Audio
27,461
Serial
15,343
Conference Proceeding
10,932
Journal
9,752
Electronic
9,206
Thesis
8,463
Manuscript
6,565
Map
2,519
Kit
1,636
Unknown
1,560
Book Chapter
880
Musical Score
658
Photo
417
Newspaper
290
Physical Object
128
Reference Material
63
Article
15