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Member for
3 ปี 8 เดือนAge: 14+
Level: 9
Language: German
(de)
ไอดี: 119432
22/04/2020
Country code: DE
Country: Germany
Main content: Säuren-Basen-Salze (1962599)
Zuordnen von Stoffen
Other contents: Formeln von Stoffen
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