000 00302nam a2200109Ia 4500
008 220729s2010 xx 000 0 und d
041 _aeng
100 _aGupta Piynsh
245 _aText book of preventive and social medicine
250 _a3
260 _aNew Delhi
_bCBS Publishers and Distributors
_c2010
999 _c133765
_d133765