TY - BOOK AU - Gupta,Prakash C. TI - Data communications and computer networks SN - 8120328469 U1 - 004.6 22 PY - 2009/// CY - New Delhi PB - Prentice Hall of India KW - Computer networks KW - OSI (Computer network standard) KW - Data transmission systems N1 - Includes index; Includes bibliographical references and index ER -