National Research Council (U.S.). Committee on the Strategic Assessment of the U.S. Department of Energy's Coal Program, ebrary, Inc, Longwell, J. P., & Rubin, E. S. (1995). Coal: Energy for the future. National Academy Press.
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Chicago-čujuhus (17. p.)
National Research Council (U.S.). Committee on the Strategic Assessment of the U.S. Department of Energy's Coal Program, Inc ebrary, John P. Longwell, juo Edward S. Rubin. Coal: Energy for the Future. Washington, D.C.: National Academy Press, 1995.
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MLA-čujuhus (9. p.)
National Research Council (U.S.). Committee on the Strategic Assessment of the U.S. Department of Energy's Coal Program, et al. Coal: Energy for the Future. National Academy Press, 1995.
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