Agenda 21 for the travel & tourism industry towards environmentally sustainable development.

Manylion Llyfryddiaeth
Awduron Corfforaethol:	United Nations Conference on Environment and Development Rio de Janeiro, Brazil, World Travel & Tourism Council, World Tourism Organization, Earth Council
Fformat:	Llyfr
Iaith:	English
Cyhoeddwyd:	[Brazil WTTC 1992].
Pynciau:	Tourism > Congresses.