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Porterfield, I. D. (Ira Deward), 1920-
Remove constraint All Creators: Porterfield, I. D. (Ira Deward), 1920-
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Dairy cattle--Feeding and feeds.
Remove constraint All Subjects: Dairy cattle--Feeding and feeds.
Subject Topical
Dairy cattle--Physiology.
Remove constraint Subject Topical: Dairy cattle--Physiology.
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