Book 13,391 eBook 6,365 Microform 1,008 Government Document 498 Video 312 Journal 173 Audio 124 CD 120 DVD 111 Thesis 99 Newspaper 98 VHS 88 Serial 84 Conference Proceeding 75 Database 57 Book Chapter 47 Blu-ray Disc 11 Photo 10 Kit 9 Software 8 Manuscript 4 Map 3 Cassette 2 Physical Object 2 Electronic 1 Reference Material 1 Slide 1