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Posters
161
Technical Report
52
Archival Materials
46
Pictorial Works
41
Ephemera
35
Popular Works
17
Speeches
17
Official reports
12
Workshops (seminars)
6
Articles
4
Excerpts
4
Instructional Films and Videos
4
Letters (correspondence)
4
Proceedings
4
Memoirs
3
Postcards
3
Poster
3
Advertisements
2
Animation
2
Cartoons
2