tree spacings for fruit trees

http://landscaping.about.com/gi/o.htm?zi=1/XJ&zTi=1&sdn=landscaping&cdn=homegarden&tm=30&f=10&tt=14&bt=0&bts=0&zu=http%3A//ag.arizona.edu/pubs/garden/mg/fruit/intro.html

http://www.orangepippinshop.com/articles/fruit-tree-planting-instructions