| Paul Weiss chairman of renewable resources study 1962 | United States Department of Agriculture, Alternative Farming Systems Information Center |
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| "The story of phosphorus: Global food security and food for thought" | National Academy of Science, National Research Council, Washington D |
Jan Hamrin, Chapter 1, The Renewable Energy Policy Manual, Organization of American States, undated.
| "Low Carbon Desalination: Status and Research, Development, and Demonstration Needs, Report of a workshop conducted at the Massachusetts Institute of Technology in association with the Global Clean Water Desalination Alliance" | Rural Science Graduates Association 2002 |
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