TY  - REP
AU  - Putwain,P.D.
AU  - Holliday,R.J.
TI  - Herbicide resistance in weeds
U1  - 83-903175 
PY  - 1981///
KW  - Herbicides
KW  - AGROVOC
KW  - Weeds and weed control
N1  - Includes 1 p. ref
ER  -