Nelson, R.R. 1964: The perfect stage of Helminthosporium spiciferum. Mycologia 56(2): 196-201.
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| Nelson, R.R. 1964: The perfect stage of Helminthosporium spiciferum. Mycologia 56(2): 196-201. |
| Nelson, R.R. 1964: The perfect stage of Helminthosporium spiciferum. Mycologia 56(2): 196-201. |