Douglas, William O., author
America challenged
Princeton University Press, 1960
 Buku Teks
Douglas, William O., author
America challenged
Princeton University Press , 1960
 Buku Teks
Maisel, Albert Q.
They all chose America / Albert Q. Maisel
Thomas Nelson , 1957
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Lerner, Max, author
America as a civilization / Max Lerner
Simon and Schuster, 1957
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Brzenzunski, Zbigniew
Between two ages: America's role in the technetronic era
Greenwood Press, 1970
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