000 00317nam a2200109Ia 4500
008 180413s9999 xx 000 0 und d
245 0 _aTeachers Guide For Basic Epidemiology Who
260 _bGeneva : World Health Organization 1993.
300 _a175
546 _aEng
690 _aEpidemiology ; Epidemiologic Methods.
999 _c41069
_d41069