Genre
Libros electrónicos
33
Problemas, ejercicios, etc
18
Problems, exercises, etc
10
Problems, excercices, etc
8
Glossaries, vocabularies, etc
5
Glosarios, vocabularios, etc
4
Congresses
2
Electronic books
2
Textbooks for foreign speakers
2
Conversation and phrase books
1
Dictionaries
1
Early works to 1800
1
Libros de texto
1