000 00300nam a2200121Ia 4500
008 220201s1959 xx 000 0 eng d
082 _a510
_bCOT
100 _aCotton , S J
245 0 _aMathematics for telecommunication
260 _aLondon
_bEnglish Universty
_c1959
300 _a245
942 _2ddc
999 _c12178
_d12178