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Dyfyniad Arddull ChicagoTerzaghi. Soil Mechanics in Engineering Practice, 3rd Ed. Wiley India, 2009.
Dyfyniad MLATerzaghi. Soil Mechanics in Engineering Practice, 3rd Ed. Wiley India, 2009.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.