TY  - BOOK
AU  - R.S. Singh,  .
TI  - Introduction to principles of plant pathology / 
SN  - 81-204-0178-6
U1  - I:4 
PY  - 1950///
CY  - New Delhi : 
PB  - Oxford & IBH Publishing Co. , 
KW  - Plant Pathology
ER  -