Genre
Congresses
97
Periodicals
61
Biography
23
Handbooks, manuals, etc
17
Dictionaries
8
Bibliography
5
Civil engineering
2
Formulae
2
Pictorial works
2
Specifications
2
Abstracts
1
Case studies
1
Catalogs
1
Encyclopedias
1
Examinations
1
Exhibitions
1
Fiction
1
Miscellanea
1
Popular works
1
Sources
1
dictionaries
1