1. 1/1/1986 This book is a catalogue of information that supports the activities of village workers all over Papua New Guinea.
  2. 1/10/2007 Echo, Inc. 20 pages, illustrated, photos
  3. 212 pages, illustrated C1-12
  4. Small is Possible is an account of what is being done by the Intermediate Technology Development Group and its counterpart organizations overseas, including those in Africa, India and Latin America, and a description of the alternative technology movements in Britain, the U.S. and Canada. These...
  5. 1/1/2001 Existen muchas variaciones de estufas de aserrín que han sido utilizadas durante años tanto en Norteamérica como en el resto del mundo. Estos modelos de estufas ofrecen un método de bajo costo y pocos insumos para producir una llama de alta intensidad que puede arder por hasta cinco horas...
  6. Recurso clave 1/1/2001 Often the biggest challenge faced by a tropical farmer is not in the production of a crop but rather in the preservation of the crop. Farmers may want to preserve a crop for future consumption or for sale at a time when the market will offer a higher price. Using a solar dehydrator is a simple,...
  7. 1/1/2002 A composting toilet is any system that converts human waste into compost through the natural breakdown of organic matter. The photo above shows a composting toilet from the late 1800’s. Composting toilets provide a sanitary method to recycle human waste while conserving water and protecting the...
  8. 1/1/2010 The purpose of this document is to show several water pump designs constructed from PVC pipe, explain how to manufacture them, and discuss pump performance and how to improve on these designs.
  9. 1/1/2002 This simple forage cutter provides a mechanism to chop tough grasses or other forages to make them more palatable and digestible for livestock. This results in more efficient food conversion for animals and reduced wastage. It can also be used to chop materials for compost, silage, vermiculture,...
  10. 1/12/1996 108 pages, tables