Gass, Saul I.
McGraw-Hill, 1985
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Gass, Saul I., author
Mc Graw Hill, 1975
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Swanson, Leonard W., author
Mc Graw Hill, 1980
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Djati Kerami, author
Universitas Terbuka, 2008
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Nesa, Wu, author
McGraw-Hill, 1981
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