000 00512nam a2200193Ia 4500
008 230524s9999 xx 000 0 und d
040 _cUDSM
050 _aQTO GF23.W26
100 _aWalmsley, D. J.
245 0 _aSystems theory: a framework for human geographic enquiry
260 _aCanberra
260 _bAustralian National University
260 _c1972
300 _a93p.
300 _c29cm.
650 _aEconomic geography
942 _2Library of Congress Classification
942 _cPamphlet
999 _c121047
_d121047