000 | 00298nam a22000977a 4500 | ||
---|---|---|---|
008 | 230927b |||||||| |||| 00| 0 eng d | ||
040 |
_aNational Science Library _cNational Science Library |
||
245 | _aTechnische mitteilungen PTT | ||
260 |
_aZurich: _bSiemens-Albis Aktiengesellschaf, |
||
942 | _cCR | ||
999 |
_c61996 _d61996 |