000 00256nam a2200109Ia 4500
008 160710s1947 xx 000 0 und d
100 _aCOBEN ,B.S
245 2 _aA HAND BOOK OF TELECOMMUNICATION
260 _bPITMAN
_c1947
300 _a435
942 _2ddc
_cB
999 _c10265
_d10265