00492nam a2200169Ia 4500001001000000003000500010008004100015010001100056040000900067100001900076245008700095260004600182300000900228440003400237650003300271700001800304Para_4813CHAP220125s1919    xx            000 0 und d  a203254  cCHAP  aWinston, J. R.  aThe field testing of copper-spray coatings  /c by J. R. Winston, and H. R. Fulton  aWashington  :b Department of Agriculture  a9 p.  aEUA. Dep. of Agri. Bull.; 785  aAspersión  Cobre en suelos  aFulton, H. R.