Introduction to plant breeding / Fred N. Briggs and P. F. Knowles. Briggs, Fred N., 1896- Knowles, Paulden F. (Paulden Ford), 1916- joint author. Plant breeding. SB123 .B695 631.522 BRI Includes bibliographies. New York : Reinhold, 1967 1967 1967 Text xviii, 426 p. : eng Reinhold books in agricultural science