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Interesting, Кенотрон
13-May-2020 Wednesday
When we ran out of flower names...
larkis12
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When we ran out of flower names...
Web design
Interesting
What color
16-January-2020 Thursday
Interesting electric bike
Deathman
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Interesting electric bike
A bike
Video
Interesting
06-May-2015 Wednesday
Home x-ray unit on kenotron
Chemicat
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Video
Dosimeter
Radiation
Interesting
Кенотрон
Radiation
Geiger counter
Physics
v20240901