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1 Results for "《 예약문의 OIO↗8489↗8306》강남레깅스룸Γ강남레깅스non선릉레깅스룸강남레깅스선릉레깅스룸herbert 선릉레깅스タ Υ레깅스룸강남레깅스joint"
$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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