00369nam a2200133Ia 4500008004100000020001800041041000800059082001300067100002000080245005100100250001200151260004900163650002300212231120s2021 xx 000 0 und d a9788194802891 aeng a614bPAT aPatel Parimal . aGolden Notes for Prevntive and Social Medicine a2nd ed. bNew DelhiJaypee Brothers Med. Pub.2021c2021 aCommunity Medicine