TY  - BOOK
AU  - North Central regional Tec....
TI  - Weeds of the North Central States
T2  - N C R Res. Pubn. No. 281 Univer. of Illinois Bulletin-772
U1  - 632.58 NCR-S 
PY  - 1981///
CY  - Urbana
PB  - University of Illinois
ER  -