PLOTKE, F The total dosage factor in the use of crystalline penicillin G; the treatment of early syphilis. [electronic resource] - American journal of syphilis, gonorrhea, and venereal diseases May 1951 - 240-5 p. digital Publication Type: Journal Article ISSN: 0096-6738 Subjects--Topical Terms: Penicillin GPenicillinsSyphilis