Format
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17,103
eBook
7,716
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2,251
Article
1,094
Conference proceeding
449
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403
Serial
153
Electronic
128
Data
83
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83
Book chapter
70
Report
51
Preprint
25
OER
21
Software
13
Microfilm
8
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6
Slide
6
Audio/Video
4
Presentation
4
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3
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2
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2
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2
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2
Book Chapter
1
Manuscript
1
Musical Score
1