C. O. Universida Cali, Cali, C. O. Corporacio, y Wageningen, N. L. Wageningen,
«Arranque y operacion de sistemas de flujo ascendente con manto de lodo (UASB) : manual del curso». Universidad del Valle, Cali, Colombia, p. 270 p.: fig., tab., 1987.
K. Siamevi,
«Education pour la sante a l'ecole : cours elementaires». Togo, Ministere de la Sante Publique, des Affaires Sociales et de la Condition Feminin, Lome, Togo, p. 75 p. : ill., 1987.
K. Siamevi,
«Education pour la sante a l'ecole : cours moyen». Togo, Ministere de la Sante Publique, des Affaires Sociales et de la Condition Feminin, Lome, Togo, p. 108 p. : ill., 1987.
M. T. Boot,
«Evaluating water supply and sanitation projects : training course», vol. no. 2. IRC, The Hague, The Netherlands, p. 2 vol. (94 p. ; 110 p.): ill., tab., 1987.
National Environmental Engineering Research Institute -Nagpur, IN, NEERI,
«National camp on defluoridation, Amreli (Gujarat), April 20-25, 1987 : report». National Environmental Engineering Research Institute, NEERI, Nagpur, India, p. 33 p., [1] p. map, [8] p. pl.: tab., 1987.
A. A. Titus,
«Training of community operators in operations and maintenance for rural potable water systems in Bolivia», vol. no. 204. Water and Sanitation for Health Project (WASH), Washington, DC, USA, p. iv, 34 p. ; fig., tab., 1987.
D. B. Edwards,
«Training of trainers in operations and maintenance for rural potable water systems in Bolivia», vol. no. 202. Water and Sanitation for Health Project (WASH), Arlington, VA, USA, p. iii, 50 p.: tab., 1987.