chemistry

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  Books for school

  We are preparing for the chemistry Olympics. Collection of tasks and answers for grades 8-11: Shirikov, Shirikova, Lastochkin

  $22.00 Original price was: $22.00.$11.00Current price is: $11.00.
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  Books for school

  We learn to solve chemistry problems. The formation of subject competence in students in grade 8. GEF: Raisa Bocharnikova

  $16.00 Original price was: $16.00.$8.00Current price is: $8.00.