000 005750a00a22001810004500
040 _aJohn Hopkins University
245 _aAmerican Journal of Hygiene
250 _bSLML: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)
260 _bBaltimore:John Hopkins University, School of Hygiene & Public Health
260 _a1921
260 _c1964
300 _aS
300 _cC
942 _2ddc
999 _c5388
_d5388