00311nam a2200121 a 450000500170000002000150001708200160003210000180004824500340006626000510010030000220015170000160017320251203110457.0  a0852954573  a620.51bCRA  aCrawley,Frank  aHazard identification methods  aRugbybInstitution of chemical engineersc2003  ax,98p.c22cm.bpb  aTyler,Brian