1. Blaney-Criddle Coefficients for Western Turf Grasses
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3. Doorenbos J. and Pruitt W. O. “Crop Water Requirements ” Irrigation and Drainage Paper 24 Food and Agriculture Organization of the United Nations Rome Italy 1977.
4. Moisture Availability and Crop Production
5. Hargreaves G. L. “Water Requirements and Agricultural Benefits for the Senegal River Basin ” thesis presented to Utah State University at Logan Utah in 1983 in partial fulfillment of the requirements for the degree of Master of Science in Engineering.