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Member for
3 ปี 2 เดือนAge: 15+
Level: 10
Language: German
(de)
ไอดี: 687003
02/02/2021
Country code: DE
Country: Germany
Main content: Säure (1885671)
Zuordnung der Stoffe zu den einzelnen Gruppen.
Other contents: Lauge, Base
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