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Brooks/Cole, 1991
Buku Teks
Amrine, Harold T., author
Prentice-Hall, 1983
Buku Teks
Kast, Fremont Ellsworth, author
Science Research Association, 1973
Buku Teks
Thomas, J. ALan
John Wiley & Sons, 1971
Buku Teks
Dessler, Gary, 1942-, author
Prentice-Hall, 1980
Buku Teks