000 00305 am a2200121 a 4500
100 1 _aHelyar, John P.
245 1 _aWeed Control
260 _aNew Brunswick
_c1916
300 _a1-12 p.
942 _2udc
_cB
440 _aWeed New Jersey Agricultural Experiment Station. Circular No. 60
901 _aS52540
999 _c110354
_d110354