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Dyfyniad Arddull ChicagoKAZMIER LEONARD J. THEORY AND PROBLEMS OF BUSINESS STATISTICS. NEW YORK: MCGRAW-HILL, 1976.
Dyfyniad MLAKAZMIER LEONARD J. THEORY AND PROBLEMS OF BUSINESS STATISTICS. MCGRAW-HILL, 1976.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.