TY  - BOOK
AU  - NYVALL, Robert F
TI  - Field crop diseases handbook
U1  - 633.089 N99F 
PY  - 1979///
PB  - Westport
KW  - FIELD CROPS -- DISEASES AND PESTS
KW  - MICRO -- ORGANISMS, PHYTOPATHOGENIC -- CONTR
KW  - PLANT DISEASES
ER  -