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Book List
5
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Management guide / Urs Fröhlich, Karl Wehrle, Stephan Niederer ; ill. Theres Raimann, Martin Läng.
- SKAT,
- 2001.
- St. Gallen :
-
Monitoring and evaluation of water and sanitation projects : concepts and tools, workshop experiences : report on the AGUASAN regional workshop, Mohale's Hoek, Lesotho, June 1993 / [David Hall, Karl Wehrle, Jürg Christen].
- SKAT,
- [ca. 1994].
- St. Gallen :
-
Expertise technique, propositions alternatives et conseil des projets d'irrigation et de drainage de l'Equipe missionnaire de la région de Jean-Rabel, Haïti / Karl Wehrle, Andrea Pozzi, Thomas Zimmermann.
- SKAT,
- 1984.
- St. Gallen :
-
Guidelines for checklist/questionnaire for a feasibility study of drinking water supply and sanitation projects in Alto Beni, Bolivia / prep. by Karl Wehrle.
- SKAT,
- 1984.
- St. Gallen :
-
Drinking water supply and sanitation : technical aspects / by Karl Wehrle.
- SKAT,
- 1985.
- St. Gallen :