The Online Books Page

Books by H. C. Diehl:

Books in the extended shelves:

• Diehl, H. C. (Helmut Charles), 1894-: Freezing injury to potatoes (U.S. Dept. of Agriculture, 1927), also by R. C. Wright (page images at HathiTrust)
• Diehl, H. C. (Helmut Charles), 1894-: Freezing to preserve home-grown foods (U.S. Dept. of Agriculture, 1945), also by K. F. Warner (page images at HathiTrust)
• Diehl, H. C. (Helmut Charles), 1894-: Picking maturity of apples in relation to storage (U.S. Dept. of Agriculture, 1926), also by J. R. Magness and M. H. Haller (page images at HathiTrust)
• Diehl, H. C. (Helmut Charles), 1894-: Preservation of fruits and vegetables by freezing in the Pacific Northwest (U.S. Dept. of Agriculture, 1939), also by J. A. Berry and Ernest Herman Wiegand (page images at HathiTrust)
• Diehl, H. C. (Helmut Charles), 1894-: Removal of spray residue from apples and pears in the Pacific Northwest (U.S. Dept. of Agriculture, 1929) (page images at HathiTrust)
• Diehl, H. C. (Helmut Charles), 1894-: Removing spray residue from apples and pears (U.S. Dept. of Agriculture, 1931), also by J. M. Lutz and A. Lloyd Ryall (page images at HathiTrust)

Find more by H. C. Diehl at your library, or elsewhere.