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Dyfyniad Arddull ChicagoWulffraat, Nicolaas Martinus. Adrenal Autoimmunity: Immunoglobulins Affecting Adrenal Growth and Steroidogenesis. Amsterdam: Free University Press, 1987.
Dyfyniad MLAWulffraat, Nicolaas Martinus. Adrenal Autoimmunity: Immunoglobulins Affecting Adrenal Growth and Steroidogenesis. Free University Press, 1987.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.