000 00313nam a2200121Ia 4500
100 _aThoman Richard S, Conkling Edgar C & Yeates, Maurice H
250 _a2nd ed
942 _cBK
245 _aThe geography of economic activity
260 _aMcGraw - Hill, New York
_c1968
082 _a330.9 Tho
300 _axii,561
999 _c7244
_d7244