Serviceberry Cultivars Tested as Street Trees: Second Report von Gerhold, Henry

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Root Dimensions of Landscape Tree Cultivars von Gerhold, Henry, Johnson, Andra

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Tree Lilac (Syringa reticulata) Cultivars Tested As Street Trees: Second Report von Gerhold, Henry

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Crabapple Cultivars Tested As Street Trees: Third Report von Gerhold, Henry

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Callery Pear Cultivars Tested As Street Trees: Final Report on a 12-year Study von Gerhold, Henry

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Effect of air pollution on Pinus strobus L. and genetic resistance : a literature review / by Henry D. Gerhold von Gerhold, Henry D

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Attitudes of Municipal Officials Toward Street Tree Programs in Pennsylvania, U.S von Stevenson, Tyler, Gerhold, Henry, Elmendorf, William

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Preserving Trees in Construction Projects: Identifying Incentives and Barriers von Despot, David, Gerhold, Henry

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Carbon storage by urban tree cultivars, in roots and above-ground von Johnson, Andra D., Gerhold, Henry D.

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Callery Pear Cultivars Tested as Street Trees: Second Report von Gerhold, Henry

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Crabapple Cultivars Tested as Street Trees: Second Report von Gerhold, Henry

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Serviceberry Cultivars Tested as Street Trees: Initial Results von Gerhold, Henry

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Tree Lilac Cultivars Tested as Street Trees: Initial Results von Gerhold, Henry

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Species Differ in Responses to Tree Shelters von Gerhold, Henry

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Planting and care of community trees / [prepared by William Elmendorf, Henry Gerhold, and Larry Kuhns ; prepared by Penn State with support and guidance from the Pennsylvania Urban... von Elmendorf, William F

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Carbon Storage by Utility-Compatible Trees von Johnson, Andra, Gerhold, Henry

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Replacement of Trees Under Utility Wires Impacts Attitudes and Community Tree Programs von Flowers, Dana, Gerhold, Henry

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Motivations and Task Preferences of Urban Forestry Volunteers von Still, Douglas, Gerhold, Henry

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Letters von Pfilf, Dick, Marker, John F., Helgerson, Ole T., Gerhold, Henry D., Olson, Lloyd W., Wolf, Robert E., Pence, Ned N., Burns, Sandy

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Callery Pear Cultivars Tested as Street Trees: Initial Results von Gerhold, Henry, McElroy, Heather

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