00450     2200169   4500001002100000008003900021035002000060245004500080100001800125260003000143300002300173020001800196084001700214082001100231650002400242990001400266INLIS000000000004202                                   I    a0010-0317004200  aIkhtisar kesehatan dan keselamatan kerja  aRidley, Johnn  aJakarta :bErlanggac2009  ax, 308 hlm.c28 cm  a9789790334595  a616.62 Rid i  a616.62  aOCCUPATIONAL HEALTH  a161710211