A preliminary study of Kentucky localities in which Pellagra is prevalent, having reference to the condition of the corn crop and to the possible presence of an insect or other agent by which the disease spreads [by H. Garman]

الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)

المعلومات البيبليوغرافية