Pozgar, George D.
An Aspen Publication, 1983
Buku Teks
Pozgar, George D.
An Aspen Publication, 1993
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Pozgar, George D.
Jones & Bartlett Learning, 2014
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Kapp, Marshall B.
Jones & Bartllett, 2010
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McWay, Dana C.
Delmar Publishers, 1997
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