Bibliography by Adryan Tordillos
Berg, Linda; Johnson, George B. and Raven, Peter H. Environment Second Edition. Copyright c. 1998, 1993 by Sanders College Publishing.
Tagro Mix Co. Tagro Mix and Food Crops. Accessed 2 March 2001. Available from http://www.ci.tacoma.wa.us/biosolids/tagro.htm
Treatment Plant FAQ. Last updated 30 May 1997; Accessed 2 March 2001.
Available from http://www.co.pierce.wa.us/abtus/ourorg/pwu/ensvcs/sewer/treatFAQ.htm
Coverage in USA Today," Cover Story, CDC sounds an alarm on the risks of sludge farmers use tons of treated sewage as free fertilizer.
Wastewater treatment; pollution Engineering; Newton; Sep 1999; Darci McLain Herndon; Marla Jeane Maling; Jeff Allen;