000 00313nam a2200121Ia 4500
100 _aSimon, J C
020 _a0-946536-16-3
942 _cBK
245 _aPatterns and operators
_bthe foundations of data representation
260 _aNorth Oxford Academic, London
_c1986
082 _a001.535 Sim
300 _avi,225
999 _c62755
_d62755