Essence of Permaculture – free eBook Sept 1, 2012 13:24:01 GMT -5 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by caveman on Sept 1, 2012 13:24:01 GMT -5 www.holmgren.com.au/David Holmgren is one of the fathers of permaculture so this might be the one to read. If you have time take a look at the rest of the website.