Biblio

J. E. M. Smet, Postma, L., y Jahan, H., «Guidelines for the improvement of school sanitation. Part 2. Implementation of school sanitation improvements». IRC, Delft, The Netherlands, p. 23 p. + 30 annexes (90 p.) : techn.drwg., 2001.

J. E. M. Smet, Postma, L., y Jahan, H., «Guidelines for the improvement of school sanitation. Part 3. Operation and maintenance of school sanitation». IRC, Delft, The Netherlands, p. 11 p., 2001.

L. Postma y During, A., «Managing a small-scale piped water supply system as a business : part one: trainers notes». IRC, Delft, The Netherlands, p. iv, 55 p. : fig., photogr., 2001.