000 00248nam a2200097Ia 4500
008 170912s9999 xx 000 0 und d
100 _aSETH M L
245 0 _aTHEORY &PRACTICE OF ECONOMIC PLANNING
260 _bPUBLICATIONS DIVISION
_c1971
942 _cTB
999 _c1222
_d1222