000 00272nam a2200109 4500
020 _a0851571263
082 _a607 HOU/TEC-2
100 _aHoughton, B
245 _aTechnical information sources
_cby Bernard Houghton
260 _aLondon
_bClive Bingley
_c1972
942 _cBK
999 _c378572
_d378572