Lecomber, R. (1979). The econonics of natural resources. New York: The Macmillan Press.
Trích dẫn kiểu ChicagoLecomber, Richard. The Econonics of Natural Resources. New York: The Macmillan Press, 1979.
MLA citiranjeLecomber, Richard. The Econonics of Natural Resources. New York: The Macmillan Press, 1979.
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