000 00260nam a2200121Ia 4500
999 _c10089
_d10089
020 _a0713132949
100 _aChapman W A J
245 _aElementary Workshop Calculations
250 _a4
260 _c1985
_bE.L.B.S.
_aLondon
300 _aix+257
942 _cBK