What is the Difference Between a Sweetpotato and a Yam?
- This site seeks to answer the question about "yams" and sweetpotatoes.
- http://www.ces.ncsu.edu/depts/hort/hil/hil-23-a.html

Definition and Classification of Commodities: Roots and Tubers and Derived Products
- A Food and Agriculture Organization (FAO) site that describes root and tuber crops and derived products.
- http://www.fao.org/waicent/FAOINFO/Economic/faodef/fdef02e.htm

Potato and onion storage
- Agricultural refrigeration and ventilation equipment for potato and onion storage. Personally designed using skid units, Cropscan temperature controls, motorised louvres, mixer boxes, and fans.
- http://www.farmelectronics.co.uk/

Manrique International Agrotech (MIAT)
- Consulting company specialized in tropical agriculture. Publishes books on potato, cassava, sweet potato, taro and other tropical crops. Web site has glossary of agronomic terms and fact sheets on potato, cassava, sweet potato, and taro.
- http://www.lava.net/manrique

International Potato Center (CIP)
- Information about the center and its roles in promoting potatoes, sweet potatoes and other Andean root crops, and in protecting Andean biodiversity.
- http://www.cipotato.org/