00777cam a22002651 4500 agr52000409 DLC 20260227111016.0 740830s1952 nyua b 000 0 eng c agr52000409 GB52-5658 (OCoLC)993794 U.S. Dept. of Agr. Library PSrS OCoLC NcRS Uk DLC premarc SB732 .W3 635 Walker, J. C. (John Charles), 1893- Diseases of vegetable crops. 1st ed. New York, McGraw-Hill, 1952. ix, 529 p. illus. 24 cm. McGraw-Hill publications in the agricultural sciences Includes bibliographies. Vegetables Diseases and pests. 11451 11451