000 | 00586nam a22001697a 4500 | ||
---|---|---|---|
008 | 230606b |||||||| |||| 00| 0 eng d | ||
040 |
_aNational Science Library _cNational Science Library |
||
080 |
_aR 621.3(038)=00 _bK3.31 |
||
245 |
_aInternational electrotechnical vocabulary: _bSignalling and security apparatus for railways, group 31 |
||
250 | _a2nd ed. | ||
260 |
_aGeneva: _bCentral Office of the I. E. C., _c1963 |
||
300 | _a106p. | ||
490 | _aInternational electrotechnical commission | ||
650 | _aElectronics | ||
653 | _aTechnology | ||
942 |
_2udc _cREF |
||
999 |
_c44625 _d44625 |