Stylus/World Health Organization - Agriculture: Land & Water Management from World Health Organization

		Analysis of Wastewater for Use in Agriculture A Laboratory Manual of Parasitological and Bacteriological Techniques R.M. Ayres, D.D. Mara 35 pages, , August 1996 Paper, 978 92 4 154484 9, $12.00

		WHO Guidelines for the Safe Use of Wastewater, Excreta and Greywater Volume 2: Wastewater Use in Agriculture World Health Organization 219 pages, 8 1/4" x 11 1/2", April 2006 Paper, 978 92 4 154683 6, $70.00