Gaia's garden : a guide to home-scale permaculture / Hemenway, Toby, Natural landscaping Organic gardening Permaculture Gaia hypothesis 635 LIN 1996 C148 Or. Text xi, 313 pages : http://www.loc.gov/catdir/enhancements/fy0904/2009000785-b.html http://www.loc.gov/catdir/enhancements/fy0904/2009000785-d.html