00305nam a2200109Ia 4500008004100000020001800041100001400059245004700073250000800120260005600128300001100184160921s9999    xx            000 0 und d  a9788180610707  aGupta, MC  aTextbook of Preventive and Social Medicine  a3rd  bJaypee Brothers Medical Publishersc2005aNew Delhi  a646 P.