00519nam a2200157Ia 4500001001000000003000500010008004100015010001100056040000900067100001800076245013400094260005100228300001500279440004400294650002300338Para_4168CHAP220125s1936    xx            000 0 und d  a202585  cCHAP  aDavis, Glen N  aSome of the factors influencing the infection and pathogenicity of Ustilago leae (Beekm.) unger on Zea mays L.  /c Glen N. Davis  aAmes Iowa  :b Agricultural Experiment Station  a250-278 p.  aIowa. Agr. Exp. Sta. Research Bull; 199  aCuitlacoche  Setas