000 00323 am a2200121 a 4500
100 1 _aGray, R.B.
245 1 _aHarvesting with combines
260 _aWashington
_c1955
300 _a1-36 p.
942 _2udc
_cB
440 _aHarvesting United States Department of Agriculture. Farmer's Bulletin No. 1761
901 _aS48888
999 _c105030
_d105030