• 21
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  • 22
    Wm. Roger Louis.
    New York : Oxford University Press, 1978.
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  • 23
    by Gwendolen M. Carter.
    Westport, Conn. : Greenwood Press, 1977.
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  • 24
    edited with commentaries by Joel H. Wiener ; introduction, J.H. Plumb.
    New York : Chelsea House Publishers, c1972.
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  • 25
    by Nicholas Mansergh.
    London ; Toronto : Oxford University Press, 1952.
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  • 26
    London : Oxford University Press, 1937-1958.
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  • 27
    by John S. Ewart.
    Ottawa : [publisher not identified], 1921.
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