Grice, W. J. (1971). Catchment planning and contour planting for safe water disposal, water and soil conservation in the plains areas of north-east India. Tocklai Experimental Station.
Dyfyniad Arddull ChicagoGrice, W. J. Catchment Planning and Contour Planting for Safe Water Disposal, Water and Soil Conservation in the Plains Areas of North-east India. Jorhat: Tocklai Experimental Station, 1971.
Dyfyniad MLAGrice, W. J. Catchment Planning and Contour Planting for Safe Water Disposal, Water and Soil Conservation in the Plains Areas of North-east India. Tocklai Experimental Station, 1971.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.