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1 Results for "《 예약문의 OIO≡⑧④89≡83O⑥》강남드림ㅮ강남드림within강남드림드림레깅스룸강남드림레깅스룸horrid 드림레깅스룸ギ∑드림레깅스룸thorough"
$15 Geiger-Muller Counter for Beta/Gamma/XRay
Project
by
GH
An inexpensive Geiger counter that can detect several kinds of ionizing radiation using a surplus Soviet tube and a one-use camera circuit
90
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