Institute of Electrical and Electronics engineers,
Majalah, Jurnal, Buletin
Zbar, Paul B., author
MrGraw-Hill, 1977
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Zbar, Paul B., author
McGraw-Hill Book, 1993
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Lander, Cyril W., author
McGraw-Hill , 1993
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Cooke, Nelson M., author
McGraw-Hill, 1982
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