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Човекът и природата
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Упражнение
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Age 9-10
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level: трети клас
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Bulgarian
คำแนะนำของผู้เขียน
Упражнение върху Твърди тела, течности, газове
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Човекът и природата
-
Упражнение
-
Age 9-10
-
level: трети клас
-
Bulgarian
คำแนะนำของผู้เขียน
Упражнение върху Твърди тела, течности, газове