Document Type
Article in Journal/Newspaper
551
Book
276
Report
188
Dataset
117
Book Part
100
Map
78
Other/Unknown Material
76
Text
64
Doctoral or Postdoctoral Thesis
25
Still Image
9
Other Non-Article Part of Journal/Newspaper
7
Conference Object
6
Master Thesis
4
Audio
2
Manuscript
1
Moving Image (Video)
1
Review
1