James, N. D. G. The forester's companion / N.D.G. James. - 4th ed. - Oxford, OX ; New York, NY, USA : B. Blackwell, 1989. - p. cm. ISBN: 0631167242 0631162585 (pbk.) LCCN: 90011143 Subjects--Topical Terms: Forests and forestry--Handbooks, manuals, etc.--Great Britain