- Author: Smyth S. Crosbie E.
- Language: Spanish
- Author: González Garcell B.
- Language: Spanish
- Author: Nieves Luís López.
- Language: Spanish
- Author: Miyara J. Alberto.
- Language: Spanish
- Author: Bartos Lubomír.
- Language: Spanish
- Author: Rosselli C.P.
- Language: Spanish
- Author: Григорьев В.П.
- Language: Spanish-Русский
- Author: Callisaya Apaza G.
- Language: Spanish