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Friuts and nuts : bearing acreage 1919-1946 ; United States Department of Agriculture, Bureau of Agricultural Economics, Crop Reporting Board
(1949)
Tree nuts : Revised estimates, 1964-70 ; production, use, value
(1972)
Walnut production costs in California
Reed, A. D., (1975)
Scope and methods of the Statistical Reporting Service
Cochrane, John E., (1975)