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Explosives, Informative
07-April-2021 Wednesday
Why does the pool smell?
KolinKertis
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Swimming pool
Explosives
Urine
The science
Informative
Chemistry
Chlorine
Humor
12-December-2019 Thursday
Explosive substances - photo from the manual of a 4th year student majoring in chemistry
warwar231
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Explosive substances - photo from the manual of a 4th year student majoring in chemistry
Explosives
Informative
Chemistry
v20240901