00506nam a2200181Ia 4500001001000000003000500010008004100015010001100056040000900067100001800076245007300094260005500167300001000222440004000232650001600272700001900288700001700307Para_3968CHAP220125s1936    xx            000 0 und d  a202232  cCHAP  aDutton, W. C.  aSpraying calendar  /c by W. C. Dutton, Ray Hutson and Donald Cation  aEast Lansing, Michigan  :b Michigan State College  a47 p.  aMichigan. Extensión Bulletin; 154  aAspersión  aCation, Donald  aHutson, Ray