00574nam a2200181Ia 4500001001000000003000500010008004100015010001100056040000900067100001700076245011400093260005500207300001500262440003500277650004300312700001900355700001800374Para_4733CHAP220125s1917    xx            000 0 und d  a203207  cCHAP  aGreen, W. J.  aCalendar for the treatment of plant diseases and insect pests  /c W. J. Green, A. D. Selby and H. A. Gossard  aWooster, Ohio  :b Agricultural Experiment Station  ap. 485-516  aOhio. Agr. Exp. Sta. Bull; 309  aFitopatología  Agricultura x Plagas  aGossard, H. A.  aSelby, A. D.