00679nam a22002297a 4500003000500000005001700005008004100022010001000063011001000073035001000083040000900093082001500102100001900117245010600136260003200242300003100274490003000305650003300335650002500368700002600393830003000419CHAP20250913062742.0971013s1982            r     00010     d  a58291  a59263  a63421  cCHAP  a631.51bU500aUnger, Paul W.  aPredicting tillage effects on soil physical properties and processesb: proceedings of a symposium...  aMadison, Wis. :bASA,c1982  a198 p.b: ilus. ; gráfs.  aSpecial publicationv; 4417aLabranzaxEfecto en suelos214aSuelosxFísica de.0 aVan Doren, D. M., Jr.0 aSpecial publicationv; 44