- Author: J. Donald Bowen, Ismael Silva-Fuenzalida, Robert P. Stockwell
- Language: English
- Year: 1961
- Author: J. Donald Bowen, Ismael Silva-Fuenzalida, Robert P. Stockwell
- Language: English
- Year: 1961
- Author: J. Donald Bowen, Ismael Silva-Fuenzalida, Robert P. Stockwell
- Language: English
- Year: 1961
- Author: J. Donald Bowen, Ismael Silva-Fuenzalida, Robert P. Stockwell
- Language: English
- Year: 1961
- Author: Bowen J. Donald (Jean Donald) Robert P. Stockwell
- Language: English, Spanish
- Year: 1960