000 00309nam a2200133Ia 4500
001 1102
008 240324s9999 xx 000 0 eng
020 _a9780763731700
082 _a614.4
_bF R E
100 _aRobert H. Friis
245 0 _aEpidemiology for public health
260 _c2004
999 _c4744
_d4744