Books by Richard O. Cromwell:
Books in the extended shelves:
![[X-Info]](https://onlinebooks.library.upenn.edu/infouc.gif)
Cromwell, Richard O. (Richard Oliver), 1890-: Clover stem rot (North Carolina Agricultural Experiment Station, 1919), also by Frederick A. Wolf (page images at HathiTrust)- Cromwell, Richard O. (Richard Oliver), 1890-: Fusarium blight of the soy bean and the relation of various factors to infection (University of Nebraska, 1919) (page images at HathiTrust)
Find more by Richard O. Cromwell at your library, or elsewhere.