Books by Calvin B. Parnell:
Books in the extended shelves:
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Parnell, Calvin B.: Economic implications of pelleting cotton gin trash as an alternative energy source (Texas Agricultural Experiment Station, 1982), also by Donald S. Moore, Ronald D. Lacewell, and Texas Agricultural Experiment Station (page images at HathiTrust)- Parnell, Calvin B.: Particulate emissions of a cotton gin in the Texas stripper area (Agricultural Research Service, U.S. Dept. of Agriculture, 1973), also by Roy V. Baker (page images at HathiTrust)
Find more by Calvin B. Parnell at your library, or elsewhere.