edited by Harry S. Katz, John V. Meleski
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Buku Referensi
Morris, Arthur E.
John Wiley & Sons, 2011
Buku Referensi
Gahart, Betty L., author
Mosby , 1995
Buku Referensi
Kidder, Frank E., author
John Wiley & Sons, 1931
Buku Referensi
CRC Press, 2007
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