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Biodiesel : growing a new energy economy
Greg Pahl ; foreword by Bill McKibben
Bok Engelsk 2008
Citizen-powered Energy Book
Greg Pahl
Bok Engelsk 2007
Biodiesel : growing a new energy economy
Greg Pahl ; foreword by Bill McKibben
Bok Engelsk 2005
Natural home heating : the complete guide to renewable energy options
Greg Pahl
Bok Engelsk 2003