(1971). Water supply and wastewater disposal in developing countries. Bangkok.
Dyfyniad Arddull ChicagoWater Supply and Wastewater Disposal in Developing Countries. Bangkok, 1971.
Dyfyniad MLAWater Supply and Wastewater Disposal in Developing Countries. Bangkok, 1971.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.