Joel, A. (2000). Surface runoff: A water source for poor farming communities in drylands. Swedish University of Agricultural Sciences.
Dyfyniad Arddull ChicagoJoel, Abraham. Surface Runoff: A Water Source for Poor Farming Communities in Drylands. Uppsala: Swedish University of Agricultural Sciences, 2000.
Dyfyniad MLAJoel, Abraham. Surface Runoff: A Water Source for Poor Farming Communities in Drylands. Swedish University of Agricultural Sciences, 2000.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.