| electron Tube Data sheets |
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| Philips Book III - Gegevens en schakelingen van moderne ontvang- en versterkerbuizen |
| Title, Index | 217,935 bytes |
| Photo | 3,318,219 bytes |
| Philips "Miniwatt" sleutel buizen | 639,407 bytes |
| ECH4.pdf | 232097 bytes |
| EL50.pdf | 784353 bytes |
| UY21.pdf | 109230 bytes |
| The rest has not yet been scanned. |