TY  - BOOK
AU  - John Charles Walker
TI  - Plant pathology. Ed 2
U1  - 632.3 
PY  - 1957///
CY  - New York
PB  - Mcgraw Hill Book Co
N1  - John Charles Walker: Plant pathology. Ed 2.  (2nd ED)  New York.  Mcgraw Hill Book Co, 1957.--(632.3WAL)
ER  -