State of the World 2003: Progress Towards a Sustainable Society (Book)
Richard Jennings, Ralph Hebden
pág. 197
Rethinking Development Geographies (Book)
Paula Jones, Ralph Hebden
págs. 198-199
Water for Life - Water Management and Environmental Policy (Book)
Ralph Hebden, David Cooper
pág. 198
Dr Art's Guide to Planet Earth (Book)
Ralph Hebden, John Davidson
Reviews Notes
Ralph Hebden
pág. 199
GA Awards 2004
págs. 200-201
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