Survey and excavations in southern Ecuador /

por Collier, Donald 1911-1995
Publicado 1943

Ancient Ecuador : culture, clay and creativity 3000-300 B. C. /

por Lathrap, Donald Ward 1927-1990, Lathrap, Donald Ward 1927-1990, Collier, Donald, Chandra, Helen
Publicado 1976

Indians before Columbus : twenty thousand years of North American history revealed by archeology. /

por Martin, Paul Sidney 1899-1974
Publicado 1947