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Dyfyniad Arddull ChicagoHANSON, J.L. An Introduction to Applied Economics. 2nd ed. Plymouth: Macdonald and Evans, 1975.
Dyfyniad MLAHANSON, J.L. An Introduction to Applied Economics. 2nd ed. Macdonald and Evans, 1975.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.