Document Type
Still Image
4,754
Article in Journal/Newspaper
4,196
Text
3,124
Book
1,162
Report
993
Doctoral or Postdoctoral Thesis
613
Thesis
467
Journal/Newspaper
354
Book Part
343
Other/Unknown Material
325
Conference Object
216
Dataset
189
Map
157
Master Thesis
111
Audio
68
Other Non-Article Part of Journal/Newspaper
63
Bachelor Thesis
52
Moving Image (Video)
22
Review
20
Manuscript
16
Lecture
7
Musical Notation
1
Software
1