Resources. Gabriola Island, BC. New Society Publishers. Ianto Evans, Michael G. Smith, and Linda Smiley. 2003. The Hand-Sculpted House: A Practical and Philosophical Guide to Building a Cob Cottage. Chelsea Green Publishing. Woolley T. 2006. Natural Building: A Guide to Materials and Techniques. Crowood Press. External links Natural Builder's Knowledge Network, requires Facebook membership The Last Straw Journal, International journal of natural building and ecological design Architectural theory Sustainable building Sustainable architecture Buildings and structures by type Recycled building materials Building materials Timber framing