Genre
Web sites
30
Maps
10
History
8
Early works to 1800
4
Papyri
3
Sources
3
Catalogs
2
Pictorial works
2
Television
2
Archives
1
Art
1
Bibliography
1
Biography
1
Chronologies
1
Chronology
1
Classification
1
Conference papers and proceedings
1
Congresses
1
Early Maps to 1800
1
Early works
1
In art
1
Problems and exercises
1
Problems, exercises, etc
1
Quotations, maxims, etc
1
Texts
1