RNGR.net is sponsored by the USDA Forest Service and Southern Regional Extension Forestry and is a colloborative effort between these two agencies.

U.S. Department of Agriculture USDA Forest Service Southern Regional Extension Forestry Southern Regional Extension Forestry

Skip to content. | Skip to navigation

Home → Publications → National Nursery Proceedings → 1966 → Sex Expression In Populus Trichocarpa (T. & G. ex Hook.) And In Its Hybrids