Stakman, E. C. 1885-1979. Principles of plant pathology [by] E. C. Stakman [and] J. George Harrar. - New York, Ronald Press Co. [1957] - xi, 581 p. illus., maps, diagrs., tables. 24 cm. Includes bibliographies. LCCN: 57009298 Subjects--Topical Terms: Plant diseases. LC Class. No.: SB731 / .S77 Dewey Class. No.: 632