00932nac a22002417a 4500001001000000003000900010005001700019008003400036040005400070072000800124100002000132100001800152110006300170245010200233246011100335260003600446300001100482490009500493500004800588650001900636650002400655650001100679BR9000182BR-BrBNA20240105121024.0230509b bl.|||m| |||| 00| 0 por d  aBR-BrBNAbporcBiblioteca Nacional de Agricultura  aP361 aSorrenson, W.J.1 aMontoya, L.J.1 aFundacao Instituto Agronomico do Parana, Londrina (Brasil)1 aImplicacoes economicas da erosao do solo e do uso de algumas praticas conservacionistas no Parana1 a[Economic implications of soil erosion and of the use of some conservationist practices at Parana, Brazil]3 aLondrina, PR (Brasil): c1989.   a110 p.  aBoletim Tecnico - Fundacao Instituto Agronomico do Parana (Brazil)vno. 21xISSN 0100-3054  aSummary (Pt); 63 tables; 10 illus.; 38 ref.  aEROSAO DO SOLO  aCONSERVACAO DO SOLO  aPARANA