1. Taylor, R. L.: “Geographic Variations in the Prevalence of Histoplasmin Sensitivity in the Panama Canal Zone,” (in press), 1962.
2. Calvo, A., Young, R. V. and Chavez, O.: “Epidemiologia de la Tuberculosis en la Republica de Panama y un Programa en Desarrollo,” presented at the Central American Congress on Tuberculosis in Guatemala City, April 1960.
3. Young, R. V.: Personal communication as Director del Servicio Nacional de Vacunacion BCG of the Republic of Panama.