00369nam a2200109Ia 4500008004100000082001800041100001200059245005300071260003800124630001800162650007900180211122s9999||||xx |||||||||||||| ||und||  a614.44bPAR-P  aPark, K 0aParks Textbook of Preventive and Social Medicine  bBanarsidas BhanotaJabalpurc2015  xGeneral Stack  aTechnologyvMedicine & health Incidence & prevention of diseaseSocial Work