00292nam a2200133Ia 45000030006000000080041000060400015000471000018000622450030000802500010001102600009001205460012001290050017001410STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aAllen Rae, N.  aCrop management economics  aFirst  c1977  aEnglish20220125165553.0