Drainage and ground-water research in Lajas velley, Puerto Rico
Vazquez, R., Velez, J.O.
Drainage and ground-water research in Lajas velley, Puerto Rico - Puerto Rico 1967 - 36 p. - No. 206; Puerto Rico Agricultu .
Drainage and ground-water research in Lajas velley, Puerto Rico - Puerto Rico 1967 - 36 p. - No. 206; Puerto Rico Agricultu .