Format
Book
40,946
Book Chapter
15,928
Conference Proceeding
4,025
Map
1,778
Thesis
1,256
Musical Score
1,024
eBook
943
Journal
930
Software
835
Serial
584
Photo
513
Video
253
Audio
236
DVD
161
Newspaper
101
VHS
83
Manuscript
65
Kit
64
Cassette
40
Slide
32
Physical Object
25
Reference Material
9
Database
7
CD
4
Unknown
3
Sensor Image
2