00309nam a2200109Ia 4500008004100000020001800041100001300059245005400072250000900126260005300135300001100188160921s9999    xx            000 0 und d  a9789382219026  aPark, K.  aPark's Textbook of Preventive and Social Medicine  a22nd  bM/s Banarsidas Bhanot Publishersc2013aJabalpur  a876 P.