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  • 20 questions and answers on orchard fertilization 

    Benson, Nels R.; Bullock, Richard M. (Richard Melvin); Lindner, Robert C.; Overley, Fred Lloyd, 1884-; Batjer, L. P. (Lawrence Paul), 1907-; Embleton, T. W.; Stanberry, C. O. (Chauncy Owen), 1913-1978 (Pullman, Washington : State College of Washington. Extension Service., 1950-07)