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Dyfyniad Arddull ChicagoJazul, Noreen A. "Two US Firms Offer COVID Vaccines to PH: FDA Cautions Public Against Unregistered Vaccines." Manila Bulletin 2020.
Dyfyniad MLAJazul, Noreen A. "Two US Firms Offer COVID Vaccines to PH: FDA Cautions Public Against Unregistered Vaccines." Manila Bulletin, 2020.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.