United Nations Conference on Environment and Development.

Manylion Llyfryddiaeth
Awdur Corfforaethol:	United Nations Conference on Environment and Development (1992 : Rio de Janeiro, Brazil;)
Fformat:	Llyfr
Iaith:	English
Cyhoeddwyd:	S.L. s.n. [199?]
Pynciau:	United Nations Conference on Environment and Development (1992 : Rio de Janeiro, Brazil) Environmental policy > International cooperation. Economic development > Environmental aspects.