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Dyfyniad Arddull ChicagoMirman, Leonard J., and Daniel F. Spulber. Essays in the Economics of Renewable Resources. Amsterdam: North-Holland, 1982.
Dyfyniad MLAMirman, Leonard J., and Daniel F. Spulber. Essays in the Economics of Renewable Resources. North-Holland, 1982.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.