共 9 条
[1]
Arnold FA, 1942, PUBLIC HEALTH REP, V57, P773
[2]
DEAN H. T., 1938, Public Health Reports, V53, P1443, DOI 10.2307/4582632
[3]
Dean HT, 1941, PUBLIC HEALTH REP, V56, P365, DOI [10.2307/4583634, 10.2307/4583693]
[5]
KLEIN H., 1938, Public Health Reports, V53, P751, DOI 10.2307/4582532
[7]
Knutson J.W, 1940, J AM DENT ASSOC, V27, P579, DOI [10.14219/jada.archive.1940.0124, DOI 10.14219/JADA.ARCHIVE.1940.0124]
[8]
Malherbe M., 1944, S AFRICAN JOUR MED SCI, V9, P75
[9]
OCKERSE T., 1944, South African Medical Journal, V18, P255