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Dyfyniad Arddull ChicagoRamberg, Hans. Gravity, Deformation and the Earth's Crust. Academic Press Inc., USA, 1967.
Dyfyniad MLARamberg, Hans. Gravity, Deformation and the Earth's Crust. 1967.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.