Ventilated improved pit latrines: recent developments in Zimbabwe
Morgan, Peter R.
Ventilated improved pit latrines: recent developments in Zimbabwe - Washington, D.C. Technology Advisory Group 1982 - v,41p. 28cm.
0821300784
Privies
EAF PAM QTO TD775.M67
Ventilated improved pit latrines: recent developments in Zimbabwe - Washington, D.C. Technology Advisory Group 1982 - v,41p. 28cm.
0821300784
Privies
EAF PAM QTO TD775.M67