00487nam a2200169Ia 450000500170000000800410001703500090005804100080006708200080007510000300008324500530011326000450016630000080021150000090021950500520022865000370028020260808125439.0260808s9999||||xx |||||||||||||| ||und|| a5045 aENG a613 aWorld Health Organization 0aWorld directory of schools of public health 1971 aGenevabWorld Health Oraganizationc1972 a277 aGift aWHO, personal health, hygiene, global standards aWHObPersonal health and hygiene