000 00305nam a2200121Ia 4500
008 211221s2021 xx 000 0 eng d
082 _a614.44
100 _aPark, K.
245 0 _aTexbook of Preventive and Social Medicine
260 _bBanarsidar Pub.
650 _aHealth Science
942 _2ddc
_cBK
_02
999 _c30878
_d30878