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
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