Format
Electronic
12,524
eBook
12,349
Book
12,251
DVD
477
Journal
228
Videocassette
175
Serial
78
Government Document
45
Conference Proceeding
31
Thesis
30
CD-ROM or DVD-ROM
3
Microfilm
3
Vinyl Record
3
Audiocassette
2
Microform book
2
Archives and Manuscripts
1
CD
1
Laserdisc
1
Manuscript
1
Map
1
Newspaper
1