C. Da Silva-Wells et van Koppen, P.,
« Evaluation of The Netherlands Government's development assistance for water and sanitation »,
Dutch development policy on water, sanitation and hygiene : information package. IRC, The Hague, The Netherlands, p. 8 p.: 1 fig., 1 tab., 5 photogr., 2014.
C. Da Silva-Wells et van Koppen, P.,
« Policy response to the evaluation of The Netherlands Government's development assistance for water and sanitation »,
Dutch development policy on water, sanitation and hygiene : information package. IRC, The Hague, The Netherlands, p. 4 p.: 3 photogr., 2014.