000 00276nam a2200121Ia 4500
100 _aRoll, Erich
942 _cBK
245 _aElements of economic theory
260 _aLondon
_bOxford University Press
_c1947
082 _a330
_bRol
300 _avii, 276
546 _aEnglish
999 _c331550
_d331550
041 _aeng