Formulas in chalk on a blackboard in the form of abstractionFormulas in chalk on a blackboard in the form of abstraction
Studio for the production of digital equipment and innovative technologiesStudio for the production of digital equipment and innovative technologies
Cassettes and phonograph for recording music on a pink backgroundCassettes and phonograph for recording music on a pink background
Сведения, необходимые для какого-н. вывода, решения. Основания для чего-н., качества.