00729nam a2200217ua 4500003001000000005001700010008004100027040003000068245002500098260012500123490001900248650002200267650002300289650001000312655001000322700002600332700002600358710004000384710004400424710004300468AR-SsjUCA20250716140442.0250228s1983    xxu           000 0 eng d  aAR-SsjUCAbspacAR-SsjUCA00aDryland agriculture.  aMadison, WI :bAmerican Society of Agronomy :bCrop Science Society of America :bSoil Science Society of America,c19830 aAgronomy ;v23 4aCultivo de secano 4aEcología vegetal 4aSuelo 4aTexto1 aDregne, H. E.eeditor1 aWillis, W. O.eeditor2 aAmerican Society of Agronomy. ASA. 2 aCrop Science Society of America. CSSA. 2 aSoil Science Society of America. SSA.