Book 315,202 eBook 112,304 Microform 18,391 Government Document 8,676 Video 6,618 Journal 4,422 Thesis 2,582 Conference Proceeding 2,416 DVD 2,346 Serial 1,699 Audio 814 CD 794 VHS 776 Musical Score 772 Manuscript 678 Map 606 Database 298 Newspaper 284 Blu-ray Disc 227 Software 207 Photo 165 Book Chapter 163 Kit 161 Cassette 66 Electronic 55 Slide 17 Physical Object 16 Unknown 14 Reference Material 7 Braille 2 Globe 1