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Dyfyniad Arddull ChicagoSachs, Mendel. General Relativity and Matter: A Spinor Field Theory from Fermis to Light-years. Boston: D. Reidel Pub. Co., 1982.
Dyfyniad MLASachs, Mendel. General Relativity and Matter: A Spinor Field Theory from Fermis to Light-years. D. Reidel Pub. Co., 1982.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.