The ecosystems concept in natural resource management /
edited by George M. Van Dyne .-
- New York : Academic P., 1969.
- xii, 383 p. : ill.
"Based on a symposium held at the annual meeting of the American Society of Range Management in Albuquerque, New Mexico on February 12-15, 1968"
Includes bibliographical references
--Ecology - Congresses.--Conservation of natural resources - Congresses.