000 00299nam a2200133Ia 4500
001 9954
008 150525s9999 xx 000 0 und d
020 _a0-408-00840-7
100 _aRidley John
245 _aSafety At Work
250 _a2
260 _aLondon
_bButterworths
_c1987
300 _a,;ill.
999 _c42661
_d42661