| 000 | 00604nam a2200193Ia 4500 | ||
|---|---|---|---|
| 919 | _a174169 | ||
| 082 |
_a621.381537 _bN723 |
||
| 100 | _aNational Aeronautics and space administration, Washington | ||
| 245 |
_aElectronic switches and control circuits _b |
||
| 260 |
_aWashington _bNASA _c1972 |
||
| 300 | _aii,19p | ||
| 490 | _aNASA SP-5948(01) | ||
| 690 | _aElectronic Swithes | ||
| 999 |
_c165195 _d165195 |
||