%0 Journal Article %T Ecologia industrial: princ¨ªpios e ferramentas %A Paulo Cadete Ferr£¿o %J Engenharia Sanitaria e Ambiental %D 2012 %I Brazilian Association of Sanitary and Environmental Engineering %R 10.1590/s1413-41522012000100002 %U http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-41522012000100002