A.McBride, T. Pearce, D.Rees. Caught in a time warp, the upland farm of Gilfach, near Rhayader in Powys, has not been 'improved' since the 17th century. Taking Gilfach as a paradigm, the authors and the artist paint a picture of how man and nature conspire to determine the landscape and weave the threads of social and natural history to show how the scenery was formed. Considering each habitat, they trace the ecological webs of the plants and creatures that live there. 160 pgs, Hardcover