Book 7,739 eBook 6,967 Video 304 Journal 282 Thesis 257 Government Document 205 Microform 198 Serial 84 Conference Proceeding 44 Audio 28 Database 27 CD 26 DVD 17 Book Chapter 10 VHS 7 Software 6 Blu-ray Disc 2 Kit 2 Cassette 1 Electronic 1 Manuscript 1 Map 1 Newspaper 1