1. AgriBase™ Farms Data,2005
2. Crop evapotranspiration: guidelines for computing crop water requirements;Allen,1998
3. Agroecology: The Science of Sustainable Agriculture;Altieri,1995
4. Counting Canada's Natural Capital: Assessing the Real Value of Canada's Boreal Ecosystem Services;Anielski,2005
5. Certified BIO-GRO Organic Production Standards;Anonymous,1994