Boyd, Harper W., Jr., author
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Buku Teks
Charvat, Frank J.
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Buku Teks
Boyd Jr., Harper W.
Richard D. Irwin Inc , 1958
Buku Teks
Boyd, Harper W., Jr., author
Richard D. Irwin, 1970
Buku Teks
Peter, J. Paul, author
McGraw-Hill, 2004
Buku Teks