Better trees for metropolitan landscapes : proceedings of the symposium, held on 4-6 November, 1975, at the U.S. National Arboretum, Washington, D.C.

Published: Forest Service, U.S. Dept. of Agriculture, Northeastern Forest Experiment Station ; for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1976

Breeding pest-resistant trees : proceedings

1st ed.

Published: Symposium Publications Division, Pergamon Press, 1966