000 00280nam a2200085 4500
082 _a025.43 UDC/BSI-15
245 _aBS 1000[654]: 1983 UDC 654 Telecommunication and telecontrol (Organisation services)
_cBritish standards institutions
260 _aLondon
_bB S I
_c1983
942 _cREF
999 _c380234
_d380234