Género
Electronic books
28
Libros electrónicos
17
Problemas, ejercicios, etc
4
Congresses
3
Problems, excercices, etc
3
Problems, exercises, etc
2
Textbooks for foreign speakers
2
Bibliography
1
Case studies
1
Dictionaries
1
Estudios de caso
1
Glosarios, vocabularios, etc
1
Glossaries, vocabularies, etc
1
Libros de texto
1
Self-instruction
1