Biblio

J. van Nostrand and Wilson, J., Le cabinet d'aisances ameliore a double fosse ventiles : manuel de construction pour le Botswana, vol. no. 3. Washington, DC, USA: World Bank, Technology Advisory Group, 1986, p. 49 p. : fig.

J. van Nostrand, Wilson, J. G., Basaako, K., Parker, R. D., and Waller, R. B., “Handbook for district sanitation coordinators”, vol. no. 9. World Bank, Washington, DC, USA, p. 122 p.: fig., 1983.

J. van Nostrand and Wilson, J. G., “Rural ventilated improved pit latrines : a field manual for Botswana”, vol. no. 8. World Bank, Washington, DC, USA, p. 61 p. : ill., 1983.

J. van Nostrand and Wilson, J. G., “The ventilated improved double-pit latrine : a construction manual for Botswana”, vol. no. 3. World Bank, Washington, DC, USA, p. 47 p., 1983.