The Ecosystem concept in natural resource management - Van Dyne, George M., 1932-; American Society of Range Management (New York : Academic Press, 1969)
" Based on a symposium held at the annual meeting of the American So ciety of Range Management in Albuquerque, New Mexico on February 12-15, 1968.
Includes bibliographical references
Keywords: Ecology -- Congresses; Conservation of natural resources -- Congresses