Books by Nicholas Albert Pettinger:
Books in the extended shelves:
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Pettinger, Nicholas Albert, 1901-: Diseases in Illinois seed corn as found in the fifth utility corn show (University of Illinois Agricultural College and Experiment Station, 1925), also by Benjamin Koehler (page images at HathiTrust)- Pettinger, Nicholas Albert, 1901-: The effect of fertilizers, crop rotation and weather conditions on the anchorage of corn plants (Virginia Agricultural Experiment Station, 1933) (page images at HathiTrust)
- Pettinger, Nicholas Albert, 1901-: The vegetation-reproduction relationship in crop plants as affected by certain factors. (Urbana, Ill., 1929) (page images at HathiTrust)
Find more by Nicholas Albert Pettinger at your library, or elsewhere.