Separation of Mixtures of Two Drug-Resistant Strains of Feline Pneumonitis Virus by Limiting Dilution Passage in Chick Embryo Yolk Sac

Abstract
James W. Moulder, Jacqueline Ruda, Rima M. Greenland; Separation of Mixtures of Two Drug-Resistant Strains of Feline Pneumonitis Virus by Limiting Dilution Pas