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Steiner, U.

Steiner, U. & Brunner, M.C., 1986. Manual for the installation and maintenance of the Sarvodaya handpump SL 5, Moratuwa, Sri Lanka: Helvetas, Swiss Association for Development and Cooperation. Available at: https://es.ircwash.org/sites/default/files/232.2-2436.pdf.

Fecha publicación: 01/01/1970

Stark, R. & Steiner, U., 1986. Manual of standardization for the construction of village water supplies in Sarvodaya Villages in Sri Lanka, Moratuwa, Sri Lanka: Helvetas, Swiss Association for Development and Cooperation.

Fecha publicación: 29/12/2004

Stark, R. & Steiner, U., 1985. Manual for the construction of handdug drinking water wells in Sarvodaya villages in Sri Lanka, Moratuwa, Sri Lanka: Helvetas, Swiss Association for Development and Cooperation. Available at: https://es.ircwash.org/sites/default/files/212.5-83MA-2435.pdf.

Fecha publicación: 29/12/2004

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