000 00288nam a2200133Ia 4500
008 221001s1990 xx 000 0 eng d
082 _a658 SIN
100 _aRAY (N.C)
245 0 _aIntroduction to microeconomics
250 _a2
260 _c1990
300 _a446
942 _2ddc
_cBK
999 _c18981
_d18981