Galbraith, John Kenneth, 1908-2006, author
Houghton Mifflin, 1979
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Nendeln : The Association of American Geographers
Majalah, Jurnal, Buletin
Ko, Un, 1933-, author
South Korea, 2006
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Snedden, Billy Mackie, author
Macmillan, 1990
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Richman, Fred, author
Brooks/Cole, 1967
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