Good cheap vegetarian protein source?

[Filliam H. Muffman]

Eat lots of bugs.

Rotate your essential amino acid sources, tofu, rice, beans, corn, legumes, nuts, peas, whole grains, beef. These are two good pages on it.
http://www.vrg.org/nutrition/adapaper.htm
http://www.foodsforlife.org.uk/nutrition...ition.html