00379nam a2200133Ia 4500008004100000082001700041100001600058245003500074260004900109300000800158650002100166650003400187653002400221170901s1990    xx            000 0 und d  a614.44bS16S  aSaxena, R.R 0aSocial and Preventive Medicine  aDelhibCBS Publishers and Distributorsc1990  a392  aMedical sciences  aTechnology (Applied sciences)  aPreventive medicine