00732nam a2200217 4500 vtls000012093 KUKTEM 20251117142352.0 060606t2004 xxu gr |0 1 0|eng | 0471930512 201107131805 VLOAD 200908141147 VLOAD 200908141117 VLOAD 200908131605 VLOAD 200606141159 VLOAD UMP TK5105 .H4444 1991 Held, Gilbert, 1943- Understanding data communications : from fundamentals to networking / Gilbert Held New York: J. Wiley & Sons, 1991 xviii, 546 p.: ill.; 25 cm. Includes index Data transmission systems Computer networks 0 0 lcc 0 0 NFIC 20000 20000 2019-09-04 194.93 0 TK5105 .H4444 1991 0000010163 2019-09-04 00:00:00 1 194.93 2019-09-04 OPEN 27906 27912