00248nam a2200109Ia 450000500170000008000170001724500430003426000240007730000100010150000080011158300190011920260716043047.0  a08.12.02 I61  aSafety in the use of chemicals at work  bILOaGenevaCHc1990  a87 p.  aIDS  c3/7/00kM2LMGR