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Dyfyniad Arddull ChicagoMader, Sylvia S. Student Study Art Notebook Biology. WCB/McGraw-Hill, 1996.
Dyfyniad MLAMader, Sylvia S. Student Study Art Notebook Biology. WCB/McGraw-Hill, 1996.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.