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  1. 455Khz BFO zum Kurzwellen SSB Empfang selber bauen

    455Khz BFO zum Kurzwellen SSB Empfang selber bauen

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  2. A kind of 1960-70s Japan's industrial high school education (in Japanese)

    A kind of 1960-70s Japan's industrial high school education (in Japanese)

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  3. A kind of 1960-70s Japan's industrial high school education

    A kind of 1960-70s Japan's industrial high school education

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