000 00328nam a2200133Ia 4500
008 100324s9999 xx 000 0 und d
100 _aRobertson D
245 _aLectures on economic principles
260 _c1969
_bCollins
_aLondon
366 _b1969
650 _aECONOMICS
942 _cBK
999 _c65358
_d65358