000 00321nam a2200121Ia 4500
008 160710s1958 xx 000 0 und d
082 _a621.385 SMI
100 _aSMITH,J.R.G.
245 _aELEMENTARY TELECOMMUNICATIONS PRACTICE
260 _bTHE ENGLISH UNIVERSITIES PRESS LTD.
_c1958
300 _a293
942 _2ddc
_cB
999 _c25492
_d25492