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1 |
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|a Spangerberg, Karl R.
|9 62230
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| 245 |
1 |
0 |
|a Vacuum Tubes
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| 260 |
|
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|a New York :
|b McGraw-Hill Book Co.,
|c 1948.
|
| 300 |
|
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|a xvii, 860 p. :
|b il.; gráfs. ;
|c 24 cm.
|
| 490 |
0 |
|
|a Electrical and electronic engineering ser.
|
| 500 |
|
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|a Apéndice pp. 811-828 Notas bibliográficas al pie de página
|
| 650 |
|
4 |
|a BOMBAS DE VACÍO
|9 62231
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| 942 |
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|d Miguel Kiperszmid
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|z a
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