00442nam a2200133Ia 4500008004100000082002500041100002200066245003600088260002900124300001300153600004300166600003400209650006500243140224s9999    xx            000 0 und d  a633.002:631.675.2 L9  aThorne, D. Wynne.  aSoil, water and crop production  aConnecticutbAVIcc 1979  aix,353p.  a D.Wynne Thorne (and) Marlowe D.Thorne  aThorne, Marlowe D., jt. auth.  aCropping Systems,Agricultural ecology,Agricultural geography