Morgenstern, E. K.
Plus-tree selection : review and outlook / by E.K. Morgenstern ... [et al.]. - Ottawa : Dept. of the Environment, Canadian Forestry Service, 1975. - 72 p. : ill. - Publication (Canadian Forestry Service, Dept. of the Environment) ; no. 1347 .
Tree breeding.
Pine.
Plus-tree selection : review and outlook / by E.K. Morgenstern ... [et al.]. - Ottawa : Dept. of the Environment, Canadian Forestry Service, 1975. - 72 p. : ill. - Publication (Canadian Forestry Service, Dept. of the Environment) ; no. 1347 .
Tree breeding.
Pine.