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Dyfyniad Arddull ChicagoLange, Oskar, and Fred M. Taylor. On the Economic Theory of Socialism. New York: McGraw-Hill, 1964.
Dyfyniad MLALange, Oskar, and Fred M. Taylor. On the Economic Theory of Socialism. McGraw-Hill, 1964.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.