00286nam a2200097Ia 4500008004100000082002100041100001800062245005900080260003300139300001600172260825b        |||||||| |||| 00| 0 eng d  a333.715bIs76.EE  aIsard, Walter  aEcologic-economic analysis for regional developmentb/  aNew York:bFree Press,c1972  axvii, 207p.