References
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- Harder , D. E. 1979 . Crown rust of oats in Canada in 1978 . Can. Plant Dis. Surv. , 59 : 35 – 37 .
- Harder , D. E. 1980 . Virulence and distribution of Puccinia coronata avenae in Canada in 1979 . Can. J. Plant Pathol. , 2 : 249 – 252 .