Two dangerous imported plant diseases / by Perley Spaulding and Ethel C. Field.
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| Main Author: | |
|---|---|
| Format: | Government Document Book |
| Language: | English |
| Published: |
Washington :
U.S. Dept. of Agriculture,
1912.
|
| Series: | Farmers' bulletin (United States. Department of Agriculture) ;
no. 489. |
| Subjects: |
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