000 00278nam a2200109Ia 4500
008 170711s9999 xx 000 0 und d
050 _a614.4 F917
100 _a"Friis, Robert H."
245 0 _aEpidemiology for public health practice
260 _c2004
942 _2lcc
_cBK
_kCirc.
999 _c20275
_d20275