%0 Journal Article %T Session 4. Dynamics and Transformations of Natural and Xenobiotic Compounds in Soil Environments %J Revista de la Ciencia del Suelo y Nutrici¨Žn Vegetal %D 2008 %I %U http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-27912008000400019