00634nam a2200193Ia 4500001001000000003000500010008004100015010001100056040000900067082001700076100002600093245010300119260006800222300001100290650002200301650003900323650002700362650005100389Para_1272CHAP220125s1998    xx            000 0 und d  a199980  cCHAP  aPA 633.11 M3  aMalik, Vedpal S., ed.  aBunts and smuts of wheat :b an international symposium /c ed. by Vedpal S. Malik and D.E. Mathre  aOttawa, Canada :b North American Plant Protection Organization  a445 p.  aHelminthosporium   aHelminthosporium tritici repentis   aTrigo x enfermedades   aTrigo x variedades resistentes a enfermedades