Bibliography
http://en.wikipedia.org/wiki/Food_preservation
http://science.howstuffworks.com/innovation/edible-innovations/food-preservation.htm
http://www.britannica.com/EBchecked/topic/613390/ultra-high-temperature-pasteurization
http://science.howstuffworks.com/innovation/edible-innovations/freeze-drying.htm
http://en.wikipedia.org/wiki/Drying_(food)
http://www.britannica.com/EBchecked/topic/218717/freezing
http://en.wikipedia.org/wiki/Food_preservation
http://en.wikipedia.org/wiki/Salting_(food)
http://science.howstuffworks.com/innovation/edible-innovations/food-preservation.htm
http://www.britannica.com/EBchecked/topic/613390/ultra-high-temperature-pasteurization
http://science.howstuffworks.com/innovation/edible-innovations/freeze-drying.htm
http://en.wikipedia.org/wiki/Drying_(food)
http://www.britannica.com/EBchecked/topic/218717/freezing
http://en.wikipedia.org/wiki/Food_preservation
http://en.wikipedia.org/wiki/Salting_(food)