00383nam a2200133Ia 4500008004100000082001600041245006600057260003400123300000700157650001400164650002000178653002700198653002400225170901s1970    xx            000 0 und d  a330.18bL39 0aLecture Notes in Operations Research and Mathematical Systems  aBerlinbSpringer-Verlagc1970  a65  aEconomics  aSocial sciences  aMathematical economics  aOperations research