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Kennlinie einer Rhre. Kennlinie einer Verstrkerrhre mit Betriebsarten own original text selbst gezeichnet Herbertweidner Mr CET PDrelease Original upload log de Wdwdbot CommonsHelper de KennlinieeinerR Bhre Herbertweidner bytes no Andere Versionen KennlinieeinerRhre Herbertweidner bytes no Andere Versionen Herbertweidner