000 00294nam a2200097Ia 4500
008 220729s2010 xx 000 0 und d
041 _aeng
100 _aSusmita Bhttacharya
245 _aEpidemiology principles and practice
260 _aNew Delhi
_bJaypee Brothers Medical Publisher (P) Ltd
_c2010
999 _c136318
_d136318