Online Books by
CARL DOWNEY LA RUE
(LA RUE, CARL DOWNEY, 1888-)
Books from the extended shelves:
![[X-Info]](https://onlinebooks.library.upenn.edu/infouc.gif)
La Rue, Carl Downey, 1888-: Cooperative inter-American plantation rubber development. (Division of Rubber Plant Investigations, Bureau of Plant Industry, Soils and Agricultural Engineering, Agricultural Research Administration, U.S. Dept. of Agriculture, 1946), also by Soils United States. Bureau of Plant Industry (page images at HathiTrust)- La Rue, Carl Downey, 1888-: Estate rubber; its preparation, properties and testing (Drukkerijen Ruygrok, 1920), also by O. de Vries and Carl Downey La Rue (page images at HathiTrust; US access only)
- La Rue, Carl Downey, 1888-: The hevea rubber tree in the Amazon Valley (U.S. Dept. of Agriculture, 1926) (page images at HathiTrust)
- LA RUE, CARL DOWNEY, 1888-: THE RESULTS OF SELECTION WITHIN PURE LINES OF PESTALOZZIA GUEPINI, DESM. (1921) (page images at HathiTrust)
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