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A key to species of Helminthosporum reported on grasses in the United States

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By: Luttrell, E. S. - United States. Plant Disease Survey.

Publication info: Beltsville, Md, Plant Disease Survey, Division of Mycology and Disease Survey, Bureau of Plant Industry, Soils, and Agricultural Engineering, Agricultural Research Administration, United States Department of Agriculture, 1951

Holding Institution: U.S. Department of Agriculture, National Agricultural Library