Books by Robert Earle Hardenburg:
Books in the extended shelves:
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Hardenburg, Robert Earle, 1919-: The commercial storage of fruits, vegetables, and florist and nursery stocks (U.S. Dept. of Agriculture; [for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1968), also by J. M. Lutz and R. C. Wright (page images at HathiTrust)
Find more by Robert Earle Hardenburg at your library, or elsewhere.