American Journal of Hygiene - SLML:1/2(1921/22);5(1925)-29(1939);31/32(1940);35/36(1942);40(1944)--45(1947);47/48(1948)-59(1954);61/62(1955)-73(1961);75/76(1962)-80(1964) - Baltimore:John Hopkins University, School of Hygiene & Public Health 1921 1964 - S C