6 treff

Domestic wastewater treatment in developing countries
Mara, D.D.
Bok Engelsk 2004
Low-cost urban sanitation
Mara, D.D.
Bok Engelsk 1996
Ventilated improved pit latrines : vent pipe design guidelines
by Beverley A. Ryan and D. Duncan Mara
Bok Engelsk 1983
Appropriate sanitation alternatives for low-income communities : a brief introduction
Mara, D.D.
Bok Engelsk 1982
Water, wastes and health in hot climates
edited by Richard Feachem, Michael McGarr...
Bok Engelsk 1977
Bacteriology for sanitary engineers
D.D. Mara
Bok Engelsk 1974