1. The California Water Plan;California Department of Water Resources Bulletin,1957
2. Daly, R. F., Contours of Change: The Yearbook of Agriculture 1970: 342 (1970).
3. Howe, C. W., Arid Lands in Perspective: 374 (1969).
4. McGauhey, P. H., Arid Lands in Perspective: 358 (1969).
5. Partain, L. E., Contours of Change: The Yearbook of Agriculture 1970: 189 (1970).