Huuhtanen, S.

Huuhtanen, S. & Laukkanen, A., 2006. A guide to sanitation and hygiene for those working in developing countries Upd. ed., Tampere, Finland: Tampere University of Applied Sciences, TAMK. Available at: https://fr.ircwash.org/sites/default/files/Huuhtanen-2006-Guide.pdf.