%0 Journal Article %T The two most important lateritization cycles in the Amazon region and their paleoecological importance %A COSTA MARCONDES L. DA %J Anais da Academia Brasileira de Ci¨ºncias %D 2001 %I Academia Brasileira de Ci¨ºncias %U http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652001000300014