00422nam a2200145Ia 4500008004100000020001500041082002100056100001700077245004500094250000800139260005700147300001800204650003200222650002200254170628s9999    xx            000 0 und d  a8171793800  a362.104 25 bRAT  aRatan, Vidya  aHandbook of Preventive & Social Medicine  a9th  bJaypee Brothers Medical PublishersaNew Delhi:c2007  axvi,376p.bPB  aCommunity & Family Medicine  a--Social Medicine