Genre
Technical reports
80
Maps
51
Conference papers and proceedings
31
Bibliographies
24
Congresses
23
Academic theses
5
Databases
3
Environmental impact statements
2
Guidebooks
2
Periodicals
2
Thematic maps
2
Atlases
1
Catalogs
1
Classification
1
Directories
1
Festschriften
1
Fiction
1
Geological maps
1
Identification
1
Legislative materials
1
Mine maps
1
Serial publications
1