American Journal of Gastroenterology - American Journal of Gastroenterology
- http://www.nature.com/ajg/about.html
- Nature Publishing Group
Alternative Field Crops Manual - Alternative Field Crops Manual
- 1989
- http://www.hort.purdue.edu/newcrop/afcm/
- University of Wisconsin Cooperative Extension, University of Minnesota Extension Service, & Center for Alternative Plant & Animal Products
Advances in Food and Nutrition Research - Advances in Food and Nutrition Research
- http://www.elsevier.com/locate/issn/10434526
- ELSEVIER
FAOSTAT - FAOSTAT
- Food and Agriculture Organization of the United Nations
- 02 oct 2014
- http://faostat3.fao.org/faostat-gateway/go/to/home/E
USDA Plants Database - USDA PLANTS DATABASE
- Natural Resources Conservation Service
- 23 jul 2014
- http://plants.usda.gov/java
- United States Department of Agriculture (USDA)
