Añadir a mi colección
Formato
También te puede gustar
Insects of eastern spruces, fir, and hemlock
A. H. Rose
1977
Sirococcus tsugae tip blight on eastern hemlocks
United States. State and Private Forestry. Northeastern Area
2010
Controlling hemlock scales with least environmental impact
Mark S. McClure
1987
Biology and control of hemlock woolly adelgid
Managing hemlock woolly adelgid in ornamental landscapes
1995
Hemlock borer
2000
The seasoning and preservative treatment of hemlock and tamarack cross-ties
W. F. Sherfesee
1908
Hemlock woolly adelgid
1994
