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2. Comparative study of gonococcal susceptibility to penicillin in the United States 1955-1969;Martin, J.E.; Lester, A.; Price, E.V.; Schnde, J.D.;J Infect Ds,1970
3. Infections due to penicillinase producing Neisseria gonorrhoeae in the United States, 1976-1980;Jaffe, H.W.; Biddle, J.W.; Johnson, SR, Wiesner; P.J.;J Infect Dis,1981
4. Epidemiology and treatment of gonorrhoea caused by penicillinase-producing strains in Liverpool;Arya, O.P.; Rees, E.; Percival, A.; Allergant, C.D.; Annels, E.H.; Turner, G.C.;British Journal of Venereal Diseases,1978
5. Resistant gonococcus from the Ivory Coast;Piot, P.;Lancet,1977