TY  - BOOK
CN  - S21
CN  - S21
CY  - [Washington :
DA  - 1974]
ID  - 110029
KW  - Pesticides.
KW  - Plant diseases.
N1  - "Contents originally issued in 1972."
N1  - Chiefly charts.
PB  - The Service,
PP  - [Washington :
PY  - 1974]
T1  - Guidelines for the chemical control of plant diseases and nematodes / U. S. Agricultural Research Service.
TI  - Guidelines for the chemical control of plant diseases and nematodes / U. S. Agricultural Research Service.
ER  -