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rabinal: number 20
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rabinal: Transmitter in the Andes - HCJB
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rabinal: 1970s singing clock
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rabinal: sundial
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rabinal: F.N.H.Robinson
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rabinal: stereo IC amplifier 1974
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rabinal: stereo IC amplifier 1974
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rabinal: 1974 homebrew FM stereo tuner
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rabinal: FM stereo tuner 1974
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rabinal: pi-mode stereo amplifier 1965
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rabinal: pi-mode germanium transistor amp
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rabinal: Nottingham University in 1977
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rabinal: solar experiment
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rabinal: Soviet submariners' binoculars
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rabinal: seniors
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rabinal: vinyl 1974
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rabinal: Morgan
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rabinal: Jujuy, Argentina, 1974
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rabinal: Nottingham Uni, Trent building 1976
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rabinal: Christmas stamps 1972
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rabinal: Arthur E Temple TS
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rabinal: acoustics in Strontium Titanate, perovskite structure
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rabinal: microwave acoustic physics, 1960s
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rabinal: microwave sound in electrostrictive stuff
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rabinal: microwave sound in a different electrostrictive stuff