Elements of plant pathology / Irving E.Melthus and George C.Kent Melhus, Irving E., 1881-1969. Kent, George C. (George Clarence), 1910-2008, joint author. Plant diseases. Parasitism. SB731 .M48 581.2 MEE includes references includes bibliographies and index. New York: Tne Macmillan company; 1939. 1939. 1939 Text x; 493 p.: eng