The mathematics of secrets cryptography from Caesar ciphers to digital encryption
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DIGITAL CODING OF WAVEFORMS Principles and Applications to Speech and Video
N.S.JAYANT1984 年出版688 页ISBN：
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HOSPITALITY FACILITIES MANAGEMENT AND DESIGN THIRD EDITION
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DATAPROCESSING SYSTEMS ANALYSIS ANG DESIGN:FOURTH EDITION
1985 年出版410 页ISBN：0835912434
