00621nam a22002297a 4500003000500000005001700005008004100022010001000063011001000073035001000083040000900093082001800102100002700120245002400147260005700171300002300228490001900251650003600270700001800306710004800324830001900372CHAP20220329141219.0971010s1983            r     00010     d  a64478  a65450  a72221  cCHAP  a631.0915bD7400aDregne, Harold E.eed.  aDryland agriculture  aMadison, Wis. :bAmerican Society of Agronomy,c1983  a622 p.b: gráfs.  aAgronomyv; 3314aAgriculturaxRegiones áridas.0 aWillis, W. O.0 aAmerican Society of Agronomy. Madison, Wis.0 aAgronomyv; 33