000 00339 am a2200121 a 4500
100 1 _aMcGregor, E.A.
245 1 _aRed spider on cotton and how to control it
260 _aWashington
_c1917
300 _a1-12 p.
942 _2udc
_cB
440 _aCotton United States Department of Agriculture. Farmers Bulletin No. 831
901 _aS48634
999 _c104805
_d104805