Nordin, J.A.
Elementary economics
Prentice-Hall, 1954
 Buku Teks
Fairchild, Fred Rogers
Elementary economics
Macmillan, 1939
 Buku Teks
Fairchild, Fred Rogers
Elementary economics
Macmillan, 1989
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Thomson, Edgar
A introduction to agricultural economics / by Edgar Thomson
Thomson Nelson and Sons Ltd. , 1949
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Turner, R. Kerry
Environmental economics : an elementary introduction
Harvester Wheatswheaf , 1994
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