| sustainableagriculture.net | The National Campaign for Sustainable Agriculture |
| earthwise.org.au | Earthwise Resources Development Australasia |
| berkeley.edu | Agroecology |
| wisc.edu | Center for Integrated Agricultural Systems |
| echonet.org | Title Page: Amaranth To Zai Holes |
| calsawg.org | California Sustainable Agriculture Working Group |
| buttecounty.net | Biologically Integrated Farming Systems in Rice |
| brs.gov.au | Bureau of Rural Sciences |
| allertontrust.org.uk | Allerton Research & Educational Trust |
| agriculture.de | Sustainable Animal Production: Workshops, Discussion, Resources |
| ge.com | insidege.gep.ge.com/ |
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