Book 2,364,748 results 2,364,748 eBook 1,924,998 results 1,924,998 Government Document 814,097 results 814,097 Microform 201,278 results 201,278 Conference Proceeding 85,251 results 85,251 Thesis 74,950 results 74,950 Journal 66,224 results 66,224 Video 63,970 results 63,970 Serial 58,724 results 58,724 Map 50,383 results 50,383 Audio 32,039 results 32,039 CD 28,932 results 28,932 DVD 24,445 results 24,445 Database 13,543 results 13,543 Musical Score 13,450 results 13,450 VHS 7,213 results 7,213 Blu-ray Disc 4,736 results 4,736 Software 4,448 results 4,448 Newspaper 3,063 results 3,063 Electronic 2,958 results 2,958 Photo 2,106 results 2,106 Book Chapter 1,969 results 1,969 Manuscript 1,931 results 1,931 Cassette 953 results 953 Kit 627 results 627 Physical Object 596 results 596 Reference Material 158 results 158 Slide 113 results 113 Unknown 62 results 62 Sensor Image 45 results 45 see all…

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