Studies on natural vs. artificial control of the pine tobacco scale /
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| Main Author: | |
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| Format: | Texto biblioteca |
| Language: | d |
| Published: |
St. Paul : University Farm,
1931
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| Subjects: | PINE-DISEASES AND PESTS-CONTROL-MINNESOTA, PINE TORTOISE SCALE-CONTROL-MINNESOTA, University of Minnesota, Agricultural Experiment Station, |
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