TY  - BOOK
AU  - Nyvall, R. F. ,
TI  - Field Crop Diseases Handbook
SN  - 0870553364
U1  - 632 
PY  - 1979///
CY  - Westport
PB  - AVI Publishing Co., Inc.
KW  - Crop Diseases
KW  - Plant injuries, diseases & pests
ER  -