TY - BOOK AU - BH TI - Bulletin of hygiene T2 - 38 U1 - 614 PY - 1963/// KW - Health and Hygiene KW - Hygiene--Abstracts | Public health--Abstracts--London School N1 - SD-1047-54 / 31.01.1963; Hygiene; Public Health; Preventive Medicine; Epidemiology; WHO ER -