The Online Books Page

Books by C. F. Bortfeld:

Books in the extended shelves:

• Bortfeld, C. F.: Cost of operating bulk milk tanks on Kansas farms (Agricultural Experiment Station, Kansas State College of Agriculture and Applied Science, 1956), also by Paul L. Kelly and V. E. Davis (page images at HathiTrust)
• Bortfeld, C. F.: The effect of soil texture and slope of land on productivity in two North Dakota counties (Agricultural Experiment Station, North Dakota Agricultural College, 1942), also by W. M. Johnson (page images at HathiTrust)
• Bortfeld, C. F.: Electricity on farms in southwestern Kansas (Agricultural Experiment Station, Kansas State College of Agriculture and Applied Science, 1951), also by Joe F. Davis (page images at HathiTrust)
• Bortfeld, C. F.: Practices, feed and labor requirements for cowherds in eastern Kansas (Agricultural Experiment Station, Kansas State College of Agriculture and Applied Science, 1959), also by Dale A. Knight and Gaylord J. Chizek (page images at HathiTrust)

Find more by C. F. Bortfeld at your library, or elsewhere.