Walker, John Charles
Plant pathology/ by John Charles Walker - New York: McGraw-Hill Book Company, c1957 - xi.; 819p.: ill.; 23cm.
Includes index
07067860X
B-4629
Plant pathology
SB731.W34 / .W34 1957
Plant pathology/ by John Charles Walker - New York: McGraw-Hill Book Company, c1957 - xi.; 819p.: ill.; 23cm.
Includes index
07067860X
B-4629
Plant pathology
SB731.W34 / .W34 1957