Peter Lay
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Experimente mit freier Energie.
Lay, Peter
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Mit freier Energie gegen die Klimakatastrophe
Peter Lay
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Experimente mit Strahlungsquellen im Haushalt.
Lay, Peter
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Signale aus dem Weltraum. Einfache Experimente zum Empfang ausserirdischer Radiosignale.
Lay, Peter
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