005490a00a22002050004500020001800000245004700018100003400065100001900099100002500118100002100143260003400164260000900198300001100207082001300218306002600231306002600257306002600283760002300309015001100332  a955-9021-13-3  aOccupational Health A Handbook for Doctors  aDe Alwis,  Seneviratne Rohini  aHerath,  HMSSD  aFernando,  Dulitha N  aLankatilake,  KN  bDept of Community of Medicine  c1998  a151pgs  a613.6O11  aOccupational Medicine  aOccupational Diseases  aOccupational Injuries  bReference cupboard  a003235