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  1. 2002-01-01 This book includes question and answers on how to improve and maintain tropical soil fertility. It also includes activity guides and a resource listing.
  2. The mission of The Vetiver Network International (TVNI) is to promote the worldwide use of the Vetiver System (VS) for a sustainable environment particularly in relation to land and water. Enhanced by photo galleries, this site offers a wealth of information with regard to vetiver applications...
  3. A brief video ofChris McDonoughdescribing the issues of soil erosion in black cracking clay soils in Tanzania, showing the importance of conservation farming techniques to help overcome this.