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The influence of the cassava mealybug, Phenacoccus manihoti Mat.-Ferr. (Horn., Pseudococcidae) on yield formation of cassava, Manihot esculenta Crantz

✍ Scribed by F. Schulthess; J. U. Baumgärtner; V. Delucchi; A. P. Gutierrez

No coin nor oath required. For personal study only.

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