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Lua i Stíl Chicago (17ú heag.)Federal Coordinating Council for Science, Engineering, and Technology. Committee on Earth Science. Our Changing Planet: The FY 1992 : U.S. Global Change Research Program. Washington, D.C.: Office of Science and Technology Policy, 1992.
Lua MLA (9ú heag.)Federal Coordinating Council for Science, Engineering, and Technology. Committee on Earth Science. Our Changing Planet: The FY 1992 : U.S. Global Change Research Program. Office of Science and Technology Policy, 1992.