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*1001 $aBowlen, Bernard$0(NO-TrBIB)90630434$_37251400
*24510$aOptimum combinations of competitive crops at particular locations :$ban application of linear programming$cby Bernard Bowlen and Earl O. Heady
*260  $aIowa$bIowa Agricultural Experiment Station$c[195-?]
*300  $a67 s.
*4900 $aResearch bulletin, Project 1135
*7001 $aHeady, Earl O.$0(NO-TrBIB)90544755$_37251500
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*999  $aoai:nb.bibsys.no:999223888734702202$b2021-11-14T19:52:19Z$z999223888734702202
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