The Online Books Page

Books by Henry D. Gerhold:

Books in the extended shelves:

• Gerhold, Henry D.: Better Trees for Metropolitan Landscapes : proceedings of the symposium held on 4-6 November 1975, at the U.S. National Arboretum, Washington, D.C. (Dept. of Agriculture, Forest Service, Northeastern Forest Experiment Station ;, 1976), also by Washington D.C. Symposium on Better Trees for Metropolitan Landscapes, Silas Little, Frank S. Santamour, Pa.) Northeastern Forest Experiment Station (Radnor, and United States Forest Service (page images at HathiTrust)
• Gerhold, Henry D.: Effect of air pollution on Pinus strobus L. and genetic resistance : a literature review (Environmental Protection Agency, Office of Research and Development, Corvallis Research Laboratory ;, 1977), also by Pennsylvania State University and United States. Environmental Protection Agency. Office of Research and Development (page images at HathiTrust)
• Gerhold, Henry D.: Genetic evaluation of rapid height growth in pot- and nursery-grown Scotch pine (U.S. Dept. of Agriculture, Forest Service, Northeastern Forest Experiment Station, 1985), also by Maurice E. Demeritt and Pa.) Northeastern Forest Experiment Station (Radnor (page images at HathiTrust)
• Gerhold, Henry D.: Landscape tree fact sheets (College of Agricultural Sciences, Pennsylvania State University, 2001), also by Willet N. Wandell, Norman L. Lacasse, Pennsylvania. Bureau of Forestry, United States. State and Private Forestry. Northeastern Area, United States Forest Service, and Pennsylvania State University. College of Agricultural Sciences (page images at HathiTrust)
• Gerhold, Henry D.: Planting and care of community trees (College of Agricultural Sciences, Agricultural Research and Cooperative Extension, Pennsylvania State University ;, 2001), also by William F. Elmendorf, Larry J. Kuhns, Pennsylvania State University. Agricultural Research and Cooperative Extension, Pennsylvania. Bureau of Forestry, and Pennsylvania Urban and Community Forestry Council (page images at HathiTrust)
• Gerhold, Henry D.: Street tree factsheets (School of Forest Resources, Pennsylvania State University :, 1993), also by Willet N. Wandell and Norman L. Lacasse (page images at HathiTrust)

Find more by Henry D. Gerhold at your library, or elsewhere.