000 00565nam a2200217Ia 4500
008 220516s9999 xx 000 0 und d
020 _a9780673460202
041 _aeng
082 _a330
_bRUF/P
100 _aRuffin,Roy J
245 0 _aPrinciples of economics
_c / by Roy J. Ruffin and Paul R. Gregory
250 _a4th ed.
260 _aLondon:
_bForesman and Company,
_c1990.
300 _axxxii,851p.
650 _aEconomics
650 _aElasticity
650 _aMonopoly
650 _aWorld Economics
700 _aGregory,Paul R.
942 _cBK
999 _c9264
_d9264