Geological map and cross sections of the Istarú quadrangle, Costa Rica = Mapa geológico y cortes transversales de la hoja de Istarú, Costa Rica /

by Krushensky, Richard D.
Published 1973

Reconnaissance geologic map and cross sections of central Costa Rica /

by Krushensky, Richard D.
Published 1976

Geologic map and cross section of the Abra quadrangle, Costa Rica /

by Castillo Muñoz, Rolando 1937-
Published 1977