00297nam a2200121Ia 45000030006000000080041000060400015000471000015000622450042000772600027001195460012001460050017001580STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aVenn, J.A.  aFoundations of agricultural economics  bUniversity pressc1923  aEnglish20220125165533.0