List of Intercepted Plant Pests, 1939: List of Pests Recorded During the Period July 1, 1938, to June 30, 1939, Inclusive, as Intercepted In, On, or with Plants and Plant Products Entering United States Territory (Classic Reprint)
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List of Intercepted Plant Pests, 1939: List of Pests Recorded During the Period July 1, 1938, to June 30, 1939, Inclusive, as Intercepted In, On, or with Plants and Plant Products Entering United States Territory (Classic Reprint)
