Éditeur(s) :
s.n. ( El Salvador, El Salvador ) Résumé : (Language) In Spanish and English.
El Salvador.
Shows grid.
Information presented on this map and in accompanying text is based on existing vegetation maps 1:50,000 topographic series compiled photogrammetrically, 1:50,000 soil studies, materials furnished by the Dirección General de Agricultura in June 1964, andvarious U. S. sources.
"Alianza para el Progreso".
El Salvador
El Salvador
642642072
http://ufdc.ufl.edu/UF00103168/00001