00535nam a2200181Ia 4500001001000000003000500010008004100015010001100056040000900067100001900076245007400095260004600169300000900215440003900224650005500263700001600318700001900334Para_4930CHAP220125s1923    xx            000 0 und d  a203389  cCHAP  aJohnson, Elmer  aCotton-Dusting machinery  /c Elmer Johnson, S.t. Howard, B. R. Coad.  aWashington  :b Department of Agriculture  a20 p  aEUA. Dept. Agr. Farmers Bull; 1319  aAlgodón x Maquinaria  Algodón x Fumigación  aCoad, B. R.  aHoward, S. T.