The Online Books Page

Books by Ronald G Hansen:

Books in the extended shelves:

• Hansen, Ronald G.: Hydrologic data, 1963. Vol. V, Southern California. (The Department, 1965), also by California Department of Water Resources, William E. Warne, and Reuben Busch (page images at HathiTrust)
• Hansen, Ronald G: Investigation of Kearny Mesa industrial waste disposal sites, San Diego County : a report to San Diego Regional Water Pollution Control Board (No.9) (Dept. of Water Resources, 1957), also by California. Regional Water Pollution Control Board--San Diego Region and California. Dept. of Water Resources (page images at HathiTrust)
• Hansen, Ronald G.: Water supply conditions in southern California during 1961-1962. (The Department, 1964), also by California Department of Water Resources, William E. Warne, Donald H. McKillop, and Harold W. Leeson (page images at HathiTrust)

Find more by Ronald G Hansen at your library, or elsewhere.