This is a D letter set into a pattern, which is embedded within a modified line-art 要約 アート 作成します。 D パターン
Science and education vector footage of chemistry equipment. Images of books with blank covers in different colors and a silver flask with bubbling liquid inside. Free vector graphics for your science, chemistry, education, laboratories, experiments, research, school and knowledge visuals ガラス バブル 科学 化学の本のレイアウト
European border Vector valued label and 総統李 境界線 european-style European border Vector valued label and