Conceptos generales sobre la colonización en la montaña peruanaRaymond E. Crist, Centro de Estudios de Población y Desarrollo · First published 1969Open the Tome
Learning about latin americaRaymond E. Crist and Clarence W. Sorensen Robert A. Harper · First published 1964Open the Tome
Learning About Latin America Teacher EditionRobert A. Harper,Raymond E. Crist,Calrence W. Sorensen · First published 1964Open the Tome
Changing patterns of land use in the Valencia Lake basin of VenezuelaRaymond E. Crist, Carlos E. Chardón · First published 1941Open the Tome
Étude géographique des Llanos du Venezuela occidentalRaymond E. Crist · First published 1937Open the Tome
