00320nam a2200133Ia 45000030006000000080041000060400015000471000023000622450053000852500010001382600009001485460012001570050017001690STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aRobert Stevens, D.  aTradition and dynamics in small farm agriculture  aFirst  c1977  aEnglish20220125165554.0