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Keith Helmuth
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Tracking down ecological guidance
Keith Helmuth · Chapel Street Editions
273 sayfa · 2015
Human ecology / Ecology / Economic aspects / Religious aspects / Écologie humaine
Fueling our future
Ed Dreby, Keith Helmuth, Judy Lumb · Published for the Quaker Institute for the Future by Producciones de la Hamaca
67 sayfa · 2009
Ecology / Society of Friends / Environmental ethics / Human ecology
Arrowhead to hand axe
Keith Helmuth · Argenta Friends Press
44 sayfa · 2004
Environmental ethics / Human ecology / Religious aspects / Society of Friends / Environmental economics
Tappan Adney
C.Ted Behne, James W. Wheaton, Keith Helmuth · Goose Lane Editions
Sayfa sayısı yok · 2024
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