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Dyfyniad Arddull ChicagoBCIRA. A MANUAL OF ECOMMENDEDFRRCEDURES FOR THE ANALYSIS OF CAST IRON FOUNDRY. BRIGHTON: BCIRA, 1980.
Dyfyniad MLABCIRA. A MANUAL OF ECOMMENDEDFRRCEDURES FOR THE ANALYSIS OF CAST IRON FOUNDRY. BCIRA, 1980.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.