The present state of mangrove ecosystems in Southeast Asia and the impact of pollution : Singapore 1980
San Francisco Bay : use and protection. An investigation into Man's activities and impacts on San Francisco Bay, government and private responses to those impacts, and prospects for its future use and protection 1982 Kockelman, William J. | Conomos, T. John | Leviton, Alan E. |
Is the concept of ecosystem management valid in the context of national parks? : a preliminary working document Carbyn, Ludwig N. |
Report on a study tour of European parks, nature reserves and land planning institutes 1973 Godier, R. |