MCMULLAN, J. T. (1977). Energy resources, by John Trever. Edward Arnold.
Chicago-čujuhus (17. p.)MCMULLAN, John Trevor. Energy Resources, by John Trever. London: Edward Arnold, 1977.
MLA-čujuhus (9. p.)MCMULLAN, John Trevor. Energy Resources, by John Trever. Edward Arnold, 1977.
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