Manning, Robert E., (1946-)

Managing outdoor recreation : = case studies in the national parks. by: Anderson, Laura E.,; Pettengill, Peter, (1981-); Manning, Robert E., (1946-) (Language materials, printed)

Studies in outdoor recreation = search and research for satisfaction / by: Manning, Robert E., (1946-); Project Muse. (Language materials, printed)

Parks and carrying capacity : = commons without tragedy / by: Manning, Robert E., (1946-) (Language materials, printed)