eBook 534,228 Government Document 352,660 Book 327,602 Microform 37,631 Serial 17,752 Database 8,765 Video 7,712 Journal 7,401 Conference Proceeding 4,671 DVD 3,153 Thesis 2,187 Audio 1,931 Map 1,819 CD 1,747 Musical Score 992 VHS 942 Software 878 Photo 444 Blu-ray Disc 443 Newspaper 313 Manuscript 172 Book Chapter 118 Cassette 118 Kit 92 Reference Material 84 Electronic 80 Physical Object 30 Slide 8 Unknown 5 Braille 1 Sensor Image 1