00960nam a2200229 a 450000100080000000500110000800800410001910000290006024500760008926000690016530000090023452002960024365000090053965000220054865000260057065000120059665000250060865000230063365300390065665300080069570000270070315614991997-11-21       1982    bl uuuu     u0uu1 u    #d1 aDOREN JUNIOR, D. M. van.  aCrop production demands and the conservation of soil resources in Ohio.  aWooster: Ohio Agricultural Research and Development Centerc1982  a14p.  aDemand for agricultural products is likely to remain strong in the future. A continued expansion of exports seems to be a firmly defined policy of several national administrations, including te current one. We have been actively seeking - and finding - new markers for agricultural products.  aOhio  aSoil conservation  aConservação do Solo  aDemanda  aProdução agrícola  aProdução Vegetal  aConservação dos recursos do solo  aUSA1 aTRIPLETT JUNIOR, G. B.