1. Organic dairy farms in Wisconsin: Prosperous, modern, and expansive;Barham,2006
2. Crop Rotational Budgets for Three Cropping Systems in the Northeastern United States;Brumfield,1996
3. The economics of organic milk production in California: a comparison with conventional costs;Butler;Am. J. Altern. Agric.,2002
4. Long-term agronomic performance of organic and conventional field crops in the mid-Atlantic region;Cavigelli;Agron. J.,2008