000 00251nam a2200109Ia 4500
008 220201s1990 xx 000 0 eng d
100 _aDYSON, R.W.
245 0 _aENGINEERING POLYMERS
260 _aLONDON
_bBLACKIE
_c1990
300 _a196
942 _2ddc
999 _c67736
_d67736