000 00278nam a2200121Ia 4500
654 _aELEC
100 _aWilliam Sessions Ltd
245 _aEstimator
260 _bWilliam Sessions Ltd. The Ebor Press
_aNew York
_c1976
082 _bWIL
300 _a144p.
999 _c28884
_d28884
041 _aeng
655 _aD-22
546 _aText in English
300 _c23 cm.