WHO guidlines for simple pit ...
Published by Mandisa Mensah
WHO guidlines for simple pit latrins
Hi Edward, these WHO guild lines may be of some use,
http://www.who.int/water_sanitation_health/hygiene/emergencies/fs3_4.pdf
Published by Mandisa Mensah
WHO guidlines for simple pit latrins
Hi Edward, these WHO guild lines may be of some use,
http://www.who.int/water_sanitation_health/hygiene/emergencies/fs3_4.pdf