TY  - SER
AU  - Swanson, Charles R,
TI  - Weed Science Vol. 28(5-6), Vol. 29(4-6)
U1  - 632.5 
PY  - 1980///
CY  - Champaign
PB  - Weed Science Society of America
KW  - Weed Science
ER  -