By Castro y calvo, José María..
Barcelona Sayma 1961

By Saz Sánchez, Agustín del..
Barcelona Sayma 1963 .
249 p.

By Gutierrez, Fernando.
Barcelona Sayma 1964 .
2 v.

By Díaz Plaja, Guillermo.
Barcelona Sayma 1963 .
151 p. 18 cm..

By Paton, Alan..
Barcelona SAYMA 1964 .
267 p. , Translation of : South Africa.

By Hoffman, Gail..
Barcelona Sayma 1964 .
183 p., [8] leaves of plates , Translation of The land and people of Israel. 18 cm..

By May, Julian.
Barcelona Sayma 1963 .
216 p. , Translation of: Real book about robots and thinking machines.