TY  - BOOK
AU  - Nostrand, John van 
AU  - Wilson, James G. 
TI  - The ventilated improved double-pit latrine: a construction manual for Botswana 
U1  - R628.45 
PY  - 1983///
PB  - Govt of Botswana 
KW  - Sanitation
KW  - Sanitation infrastructure
ER  -