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Frank's electron Tube Data sheets 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.pdf232097 bytes
EL50.pdf784353 bytes
UY21.pdf109230 bytes
   
The rest has not yet been scanned.