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Dyfyniad Arddull ChicagoSingh,Manmohan H K. Demand Theory and Economic Calculation in a Mixed Economy. New Delhi: Mac Millan, 1979.
Dyfyniad MLASingh,Manmohan H K. Demand Theory and Economic Calculation in a Mixed Economy. Mac Millan, 1979.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.