00361nam a2200109Ia 4500008004100000082002000041100001800061245008500079260003400164300001700198440003600215190415s9999    xx            000 0 und d  a302.30973 ISR-;  aIsard, Walter 0aGeneral theory: social, political, economic and regional with particular referen  aCambridgebM.I.T. Pressc1969  axIiii, 104p.  aRegional science studies series