Sourcebook of laboratory exercises in plant pathology. Sourcebook Committee of the American Phytopathological Society, Arthur Kelman, Chairman. Kelman, Arthur. American Phytopathological Society. Sourcebook Committee. American Phytopathological Society. Committee on Teaching. Plant diseases Study and teaching. SB732 .S7 581.2 AMS "Sponsored by the Committee on Teaching of the American Phytopathological Society." Includes bibliographies. San Francisco, W. H. Freeman [1967] [1967] 1967 Text xxvii, 387 p. : eng