CONVENTIONAL BEAM TESTER - NARA - 17449326.jpg
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CONVENTIONAL BEAM TESTER NARA 17449326, US National Archives series: Photographs Relating to Agency Activities, Facilities and Personnel, Images from the National Archives and Records Administration, US National Archives location: other, CONVENTIONAL BEAM TESTER
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国立公文書館所蔵作品:国立公文書館所蔵作品:ほか、存命人物写真
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conventional tester