Gunawardana, A. M. T. (1981). Water management under small village tanks. Agrarian Research & Training Institute.
Dyfyniad Arddull ChicagoGunawardana, A. M. T. Water Management Under Small Village Tanks. Colombo, Sri Lanka: Agrarian Research & Training Institute, 1981.
Dyfyniad MLAGunawardana, A. M. T. Water Management Under Small Village Tanks. Agrarian Research & Training Institute, 1981.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.