Walker, J. C. 1893-
Plant pathology.
- 1st ed.
- New York, McGraw-Hill 1950
- x. 699 p. illus. 24 cm.
- McGraw-Hill publications in the agricultural sciences .
Includes bibliographies.
agr50000488
GB51-116
Plant diseases.
Vegetable pathology.
SB731 / .W235
581.2
464 / W15