V. Hatzfeldt, Pradhananga, Y., and Khanal, R. R.,
“Guide book for conducting non formal courses on responsible waste handling in the community (based on : my clean and waste free neighbourhood)”. Papua New Guinea, Ministry of Education, Kathmandu, Nepal, p. x, 147 p. : ill., 1997.
A. Coad,
Lessons from India in solid waste management. Loughborough, UK: Water, Engineering and Development Centre, Loughborough University of Technology, WEDC, 1997, p. ca. 300 p. : fig., photogr., tab.
L. F. Diaz, A. Rios, R., O. Loyola, C., S. Montanez, L., J. Solis, C., A. Torres, B., L. Jara, S., and D. Doria, M.,
“Manejo ambiental de residuos solidos : medidas innovadoras en areas peri-urbanas de Lima : proyecto piloto demostrativo”. Alternativa, Centro de Investigacion Social y Educacion Popular, Lima, Peru, p. 26 p. : photogr. + poster, 1997.