Tipo
Electronic books
156
Libros electrónicos
85
Periodicals
44
Congresses
33
Electronic journals
22
Publicaciones periódicas
12
Congresos
9
Conference papers and proceedings
6
Congreso
5
Périodiques
3
Libros electronicos
2
Biography
1
Correspondence
1
Interviews
1
Maps
1
Money
1
Personal correspondence
1
Pictorial works
1
Silver coins
1
Sources
1
Sumerians
1