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1 Results for "《 예약문의 OIO≡⑧④89≡83O⑥》레깅스룸비용㉩강남레깅스룸hearingБ레깅스룸강남레깅스룸선릉레깅스law 선릉레깅스ь레깅스룸비용Ψっ선릉레깅스룸two"
$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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