Genre
Congresses
446
Handbooks, manuals, etc
28
Problems, exercises, etc
22
Periodicals
13
Encyclopedias
11
Case studies
10
Biography
7
congresses
7
Textbooks
6
Amateurs' manuals
3
Dictionaries
3
Statistics
3
Bibliography
2
Laboratory manuals
2
Popular works
2
Acronyms
1
Caricatures and cartoons
1
Catalogs
1
Collected Works
1
Congesses
1
Design and construction
1
Designs and plans
1
Electronic books
1
Exhibitions
1
Handboeken (vorm)
1
Handbooks and manuals
1
Interviews
1
Maps
1
Nomenclature
1
Observations
1
Observers' manuals
1
Tables
1