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Dyfyniad Arddull ChicagoE.B.C. The Central Sales Tax. Bombay: Eastern Book company Lacknow, 1990.
Dyfyniad MLAE.B.C. The Central Sales Tax. Eastern Book company Lacknow, 1990.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.