000 004420000a22001570004500
245 _aProgramming electronic switching systems : real time aspects and their language implications
100 _aHills, M.T.
100 _aKane, S.
260 _aHerts
_bPeregrinus
_c1976
300 _aviii, 207p.
440 _aIEE Telecommunication sereis ; no.3
020 _a0901223808
080 _a621.395.345
_bH5
041 _aEN
942 _cBK
999 _c103231
_d103231