Central Library OPAC
F D Heald, . (1933). Manual of plant diseases. New York: Mc-Graw-Hill Book Co: .
F D Heald, . 1933. Manual of plant diseases. New York: Mc-Graw-Hill Book Co: .
F D Heald, . Manual of plant diseases. New York: Mc-Graw-Hill Book Co: . 1933.
