Books by S. H. Wittwer:
Books in the extended shelves:
![[X-Info]](https://onlinebooks.library.upenn.edu/infouc.gif)
Wittwer, S. H. (Sylvan Harold), 1917-: Ascorbic acid (Vitamin C) content of tomatoes and apples (University of Missouri, College of Agriculture, Agricultural Experiment Station, 1954), also by A. E. Murneek and Leta Maharg (page images at HathiTrust)- Wittwer, S. H. (Sylvan Harold), 1917-: Growing fall potatoes (University of Missouri, Agricultural Experiment Station, 1945), also by Aubrey D. Hibbard (page images at HathiTrust)
- Wittwer, S. H. (Sylvan Harold), 1917-: Practices for increasing yields of greenhouse lettuce (Michigan State University, Agricultural Experiment Station, 1964), also by William Robb (page images at HathiTrust)
Find more by S. H. Wittwer at your library, or elsewhere.