There is a Sepp Holzer article in Permaculture Magazine, No 67 Spring 2011 that is just a good summary of his use of terracing in permaculture and creating microclimates in doing so.
www.thehappypermaculturalist.wordpress.com
What a beautiful glass! Yoink! This glass is now the property of this tiny ad:
permaculture thorns, A Book About Trying to Build Permaculture Community - draft eBook