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1.
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Minneapolis, MN : University of Minnesota Press, 1961.
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2.
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New York, Twayne Publishers [1966]
PS3511.A86 Z79 1966 |
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3.
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Minneapolis, University of Minnesota Press [1961]
PS3537.T323 Z65 1961 |
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4.
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New York, Twayne Publishers [1962]
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5.
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New York : Dutton, 1964.
PR6003.E282 Z68 1964 |
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6.
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Princeton, N.J., Princeton University Press, 1964.
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7.
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Baton Rouge, Louisiana State University Press, 1957.
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8.
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Chicago, H. Regnery [c1963]
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9.
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New York, The Free Press [1965, c1962]
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10.
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East Lansing, Michigan State University Press, 1960.
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