00469nam a22001452  4500001001100000005001700011008004100028040001500069050002200084100003400106245009000140260003600230300001500266650004200281000000516620151217151954.0070607s        xx            000 0 eng d  aKABUcKABU 0aTK5105b.S56 19971 aSimmonds, Andrew.@000015630910aData communication and transmission principles :ban introduction /cAndrew Simmonds.  aHoundsmills :bPalgrave,c1997.  aix, 308 p. 0aData transmission system.@0000156310