Van Nostrand, John Wilson, James
Rural ventilated improved pit latrines : a field manual for botswana - Washington World Bank 1983 - 61p. : ill. - TAG technical note ; no. 8 .
Public Health
Latrines
628.42(681) / V3
Rural ventilated improved pit latrines : a field manual for botswana - Washington World Bank 1983 - 61p. : ill. - TAG technical note ; no. 8 .
Public Health
Latrines
628.42(681) / V3