GREENBERG, L Increased efficiency of diphtheria toxoid when combined with pertussis vaccine; a preliminary note. [electronic resource] - Canadian journal of public health = Revue canadienne de sante publique Jun 1947 - 279-82 p. digital Publication Type: Journal Article ISSN: 0008-4263 Subjects--Topical Terms: DiphtheriaDiphtheria ToxoidHumansPertussis Vaccine