Online Books by
Herbert Spencer
(Spencer, Herbert, 1894-)
Books from the extended shelves:
![[X-Info]](https://onlinebooks.library.upenn.edu/infouc.gif)
Spencer, Herbert, 1894-: Biology of the parasites and hyperparasites of aphids ([Columbus, O.], 1926) (page images at HathiTrust)- Spencer, Herbert, 1894-: Insecticidal control for sugarcane borer : a report of progress (Louisiana State University and Agricultural and Mechanical College, Agricultural Experiment Stations, 1927), also by W. E. Hinds (page images at HathiTrust)
- Spencer, Herbert, 1894-: New equipment for obtaining host material for the mass production of Trichogramma minutum, an egg parasite of various insect pests (U.S. Dept. of Agriculture, 1935), also by Luther Brown and Arthur M. Phillips (page images at HathiTrust)
- Spencer, Herbert, 1894-: Sugarcane borer control aided through utilization of infested and trap corn (Louisiana State University and Agricultural and Mechanical College, Agricultural Experiment Stations, 1927), also by W. E. Hinds (page images at HathiTrust)
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