Environmentally sound management of solid wastes and sewage-related issues (section 2, chapter 13 of Agenda 21) : report of the Secretary-General of the Conference : United Nations Conference on Environment and Development.
Environmentally sound management of solid wastes and sewage-related issues (section 2, chapter 13 of Agenda 21) : report of the Secretary-General of the Conference : United Nations Conference on Environment and Development.