00339nam a2200121Ia 45000030006000000080041000060400015000471000038000622450079001002600009001795460012001880050017002000STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aWalter Isard; John Cumberland, H.  aRegional economic planning techniques of analysis for less developed areas  c1960  aEnglish20220125165617.0