000 00315nam a2200121Ia 4500
008 130225s9999 xx 000 0 und d
245 _aCorn root aphid and methods of controlling it
260 _aWashington
_c1917
300 _a1-7 p.
440 _aUnited States Department of A
901 _a26797
942 _cB
_2udc
999 _c5152
_d5152