(1964). Organization and methodology for river basin planning: Proceedings. Atlanta: Water Resources Center.
Dyfyniad Arddull ChicagoOrganization and Methodology for River Basin Planning: Proceedings. Atlanta: Water Resources Center, 1964.
Dyfyniad MLAOrganization and Methodology for River Basin Planning: Proceedings. Atlanta: Water Resources Center, 1964.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.