Krauger, P. (1973). Geothermal energy: Resources production, stimulation. Standard.
Dyfyniad Arddull ChicagoKrauger, Paul. Geothermal Energy: Resources Production, Stimulation. Carel Ottle: Standard, 1973.
Dyfyniad MLAKrauger, Paul. Geothermal Energy: Resources Production, Stimulation. Standard, 1973.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.