found: Work cat.: Tennyson, J. Hamburger heaven, c1992(hamburgers, burgers, hamburg steak)
found: Allison, S. The Cassell food dict.(hamburgers: round patties made from minced beef and seasoning which are either grilled or fried ... served in flat white buns.)
found: Cook's & diner's dict.(hamburger steak, hamburg, burger)
found: FitzGibbon, T. The food of the western world(hamburger, hamburg steaks)
found: Hennepin(hamburger x beefburger)
found: IAC(hamburgers)
found: Random House(hamburger, hamburg steak, hamburg, beefburger)
found: Web. 3(hamburger, hamburg steak)
