000 | 00486nam a22001697a 4500 | ||
---|---|---|---|
003 | BD-DhUAAB | ||
005 | 20201005140000.0 | ||
008 | 201005b xxu||||| |||| 00| 0 eng d | ||
040 |
_aBD-DhUAAB _cBD-DhUAAB |
||
082 |
_223 _a621.381512 _bB E T |
||
100 | _aBECK, A. H. W. | ||
245 |
_aTHERMIONIC VALVES : THEIR THEORY AND DESIGN _cA. H. W. BECK |
||
260 |
_aNew york: _bAT THE UNIVERSITY PRESS, _c1953 |
||
300 |
_a570 P.: _c22 SM. |
||
650 | _xTHERMIONIC VALVES | ||
942 |
_2ddc _cBK |
||
999 |
_c2258 _d2258 |