1
by Piper, J. Richard, 1946-
New York : Pearson/Longman, 2005
New York : Pearson/Longman, 2005
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2
by Piper, J. Richard, 1946-
Lanham, Md. : Rowman & Littlefield, 1997
Lanham, Md. : Rowman & Littlefield, 1997
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