Hetherington, H.W., McPhedran, F.M., Landis , H.R.M. and Opie, E.L.: A survey to determine the prevalence of tuberculosis infection in school children. Am. Rev. Tuberc.20: 421, 1929.
2.
Long, E.R.: The changing problem of tuberculosis in a city clinic. Minnesota Med.35: 1111-1118, 1952.
3.
Lurie, M.B.: Heredity, constitution and tuberculosis: an experimental study. Supp. toAm. Rev. Tuberc.44: 1-125, 1941.
4.
National Tuberculosis Association: Goals and Standards for Eliminating Tuberculosis. November, 1960.
5.
Teague, R.E. : Personal communication.
6.
Wright, S. and Lewis, P.A.: Factors in resistance of guinea pigs to tuberculosis, with special regard to inbreeding and heredity. Am. Naturalist55: 20-50, 1921.