Hansen, J.A.
Appraisal of four alternative excreta removal systems for urban areas in developing countries J.A. Hansen, H.H. Therkelsen and P. Buch-Hansen - [Oxford] Pergamon Press 1978 - p.235-249 - Progress in water technology v.11 nos. 1/2 .
Sewage disposal--Developing countries
Appraisal of four alternative excreta removal systems for urban areas in developing countries J.A. Hansen, H.H. Therkelsen and P. Buch-Hansen - [Oxford] Pergamon Press 1978 - p.235-249 - Progress in water technology v.11 nos. 1/2 .
Sewage disposal--Developing countries