Popenoe, H. (1976). Soil conservation in Central America and Panama: Current problems.
Citación estilo ChicagoPopenoe, Hugh. Soil Conservation in Central America and Panama: Current Problems. 1976.
Cita MLAPopenoe, Hugh. Soil Conservation in Central America and Panama: Current Problems. 1976.
Precaución: Estas citas no son 100% exactas.