Seed crops of forest trees in the pine region of California /

Caption title.

Seven species of broadleaf deciduous trees for windbreaks : effect of spacing distance and age on their survival and growth at Cheyenne, Wyo. /

Caption title.

Decomposition of wood and bark sawdusts in soil, nitrogen requirements and effects on plants /

Caption title.

Biology of rust resistance in forest trees: proceedings of a NATO-IUFRO advanced study institute.

The institute was held at the University of Idaho, Moscow, Id., August 17-24, 1969; it was supported by the North Atlantic Treaty Organization ... [et al.].

Trees of the forest : their beauty and use /

"Issued April 1964. Slightly revised January 1970."

Trees of the forest : their beauty and use /

"Issued April 1964. Slightly revised December 1971."

Color it green with trees : a calendar of activities for home arborists.

"Slightly revised Feb. 1968"--P. [14].

Color it green with trees : a calendar of activities for home arborists.

"Revised February 1972"--P. [14].

Protect your pines from bark beetles.

"This publication was prepared by H. Eugene Ostmark and Calvin L. Massey ..."--P. 19.

Cone-bearing trees of the Pacific coast,

"References cited": p. 13.

English trees and tree-planting,

Mode of access: Internet.

Handbook of the trees of the northern states and Canada east of the Rocky mountains. Photo-descriptive.

Mode of access: Internet.

The trees of northeastern America.

Mode of access: Internet.

Trees at leisure,

Reprinted from Country life in America.

Insects affecting park and woodland trees /

Issued also in Annual report of the museum. 59th (for 1905) v. 3-4.