Dippel, Gene, author
Foresman and Company , 1969
Buku Teks
edited by William B. Frakes
Pretice-Hall , 1992
Buku Teks
Petrocelli, Tom, author
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Buku Teks
Maier, Ronald, author
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Buku Teks
Miltiadis Lytras, John M. Carroll, Ernesto Damiani, Robert D. Tennyson
Springer-Verlag , 2008
Buku Teks