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Dyfyniad Arddull ChicagoKumar, M S. Energy Pricing Policies in Developing Countries: Theory and Empirical Evidence. Geneva: ILO, 1987.
Dyfyniad MLAKumar, M S. Energy Pricing Policies in Developing Countries: Theory and Empirical Evidence. ILO, 1987.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.