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Dyfyniad Arddull Chicagolaar, Arnold Vande. Under the Knife: A History of Surgery in 28 Remarkable Operations. UK: John Murray, 2018.
Dyfyniad MLAlaar, Arnold Vande. Under the Knife: A History of Surgery in 28 Remarkable Operations. John Murray, 2018.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.