eBook 534,223 Government Document 352,657 Book 327,588 Microform 37,631 Serial 17,751 Database 8,765 Video 7,712 Journal 7,400 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 Cassette 118 Book Chapter 116 Kit 92 Reference Material 84 Electronic 80 Physical Object 30 Slide 8 Unknown 5 Braille 1 Sensor Image 1