00388nam a2200133Ia 4500008004100000020001800041082002100059100002000080245007000100250000800170260003600178300001700214650002300231170628s9999    xx            000 0 und d  a9789374734643  a362.104 25 bRAO  aRao, B. Sridhar  aQuestion and answers in preventive and social medicineh(English)  a1st  bAITBS Publishers,aDelhi:c2010  avi,192p.bPB  aCommunity medicine