Systems

Steinhart John E. Steinhart Carol E. , Food: Politics, Economics, Nutrition, and Research, ibid., pp. 33–42. The same article appears in Energy: Use, Conservation, and Supply, ibid., pp. 48-57.

Piel E.J. Truxal J.G. , Man and His Technology, Problems and Issues, Mew York: McGraw-Hill.

Parkman Ralph , The Cybernetic Society, New York: Pergamon Press, Inc., 1972.

Winsche W.E. Hoffman K.C. Salzano F.J. , “Hydrogen: Its Future Role in the Nation's Energy Economy,” Energy: Use, Conservation, and Supply, ibid., pp. 137–143.