Apple powdery mildew and its control in the arid regions of the Pacific Northwest / by D.F. Fisher.
Of control measures -- Dormant sprays. pp. 23.
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| Format: | Government Document Book |
| Language: | English |
| Published: |
Washington, D.C. :
U.S. Dept. of Agriculture,
1918.
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| Series: | Bulletin of the U.S. Department of Agriculture ;
no. 712. |
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