1. The Use of Blood Agar for the Study of Streptococci;Brown,1919
2. A serological differentiation of human and other groups of hemolytic streptococci;Lancefield;J Exp Med,1933
3. Epidemiology of streptococcal infections;Rammelkamp;Harvey Lect,1955
4. The epidemiology of streptococcal infection;Wannamaker,1953
5. Studies on the epidemiology of rheumatic fever in the armed services;Rammelkamp,1952