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WIRELESE COMMUNICATIONS NET WORK STALLINGS, WILLIAM NETWORK SECURITY ESSENTIALS APPLICATION & STANDARDS STALLINGS, WILLIAM COMPUTER SECURITY PEINCIPLES & PRACTICE STALLINGS, WILLIAM OPERATING SYSTEMS INTERNALS AND DESIGN PRINCIPLES STALLINGS, WILLIAM CRYPTOGRAPHY AND NET WORK SECURITY STALLINGS, WILLIAM CRYPTOGRAPHY AND NETWORK SECURITY STALLINGS, WILLIAM CRYPTOGRAPHY AND NETWORK SECURITY STALLINGS, WILLIAM COMPUTER ORGANIZATION AND ARCHITECTURAL STALLINGS, WILLIAM