Singh Ram. (1984). Current Practices in Environmental Engineering.
Dyfyniad Arddull ChicagoSingh Ram. Current Practices in Environmental Engineering. Jodhpur, 1984.
Dyfyniad MLASingh Ram. Current Practices in Environmental Engineering. 1984.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.