TY - BOOK AU - Williams,Brian .K,Sawyer S.C TI - Using information technology a practical introduction to computers and communication SN - 139780070607491 AV - SBL QA 76.5 W 55 2005 PY - 2005/// CY - New York PB - McGraw-Hill KW - computers KW - Telecommunication systems KW - Information Technology ER -