TY  - BOOK
AU  - Jones,D.Gareth
TI  - Plant pathology, principles and  practice
SN  - 033515154X
AV  - SB731 .J64 1987
U1  - 632/.3�19 
PY  - 1987///
CY  - Philadelphia
PB  - Open University Press
KW  - Plant diseases
ER  -