00809nam a22002177a 4500001001600000003000900016005001700025007000300042008003400045040005400079041000900133072000800142110005400150111009600204245016700300260003400467300001100501500002800512650002800540650002300568INTER2013000014BR-BrBNA20260522152258.0ta260509b bl.||||| |||| 00| 0 por d  aBR-BrBNAbporcBiblioteca Nacional de Agricultura  a(En)  aP361 aSoil Consevation Society of America, Ankeny (USA)2 aNational Conference on Soil Conservation PoliciescWashington, D.C, (USA)d15 - 16 Nov 197910aSoil conservation policies: an assessmentbBased on material presented at the National Conference on Soil Consevation Policies, Washington. 15-16 November , 1979.3 aAnkeny USA): bSCSA, c1979.   a154 p.  aIncludes bibliographies  aConservação do solo  aPolitica agricola