eBook 12,339 Book 12,158 Government Document 4,847 Microform 536 Thesis 250 Video 190 Audio 186 CD 179 Conference Proceeding 135 Journal 130 Serial 103 DVD 66 Map 66 Database 49 VHS 32 Software 19 Book Chapter 11 Newspaper 8 Blu-ray Disc 6 Cassette 4 Kit 3 Musical Score 2 Photo 2 Electronic 1 Manuscript 1 Reference Material 1 Slide 1