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Dyfyniad Arddull ChicagoBharat Dogra. Encyclopaedia of Development, Environment and Welfare. The author, 1995.
Dyfyniad MLABharat Dogra. Encyclopaedia of Development, Environment and Welfare. The author, 1995.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.