Henry D. Gerhold books & textbook
A Forester's Legacy: The Life of Joseph E. Ibberson
Stackpole Books /2007-03-09 Hardcover / 208 Pages
isbn-10: 0811733904 / isbn-13: 9780811733908
Street Tree Factsheets (Agrs Series; No 56) by Henry D. Gerhold (1993-07-04)
Pennsylvania State Univ / Mass Market Paperback
A Century of Forest Resources Education at Penn State: Serving Our Forests, Waters, Wildlife, and Wood Industries
Penn State University Press /2007-01-29 Hardcover / 264 Pages
isbn-10: 0271029641 / isbn-13: 9780271029641
SELECTION PRACTICES OF MUNICIPAL ARBORISTS
Gerhold, Henry D & Steiner, Kim C
From: Santamour, Frank S., et al, 1976, BETTER TREES FOR METROPOLITAN LANDSCAPES /1976T Pamphlet
SELECTION OF TREES FOR TOLERANCE OF AIR POLLUTANTS
Davis, Donald D & Gerhold, Henry D
From: Santamour, Frank S., et al, 1976, BETTER TREES FOR METROPOLITAN LANDSCAPES /1976T Pamphlet
Our heritage of community trees
Pennsylvania Urban & Community Forestry Council /2002T Unknown Binding / 73 Pages
Effect of air pollution on Pinus strobus L. and genetic resistance : a literature review / by Henry D. Gerhold. 1977 [Leather Bound]
Generic /2018-01-01 Leather Bound / 56 Pages
Breeding of Pest Resistant Trees
Pergamon Pr /1966T Hardcover / 516 Pages
isbn-10: 0080117643 / isbn-13: 9780080117645
