yellow: classic works of the German language and other languages translated into German red: classics in their original foreign language orange: bi-lingual bo

yellow: classic works of the German language and other languages translated into German red: classics in their original foreign language orange: bi-lingual books blue: study guides green: original historical sources with explanations magenta: non-fiction (politics, history, society, natural sciences, art, music or religion) source: https://en.wikipedia.org/wiki/Reclam https://en.wikipedia.org/wiki/Reclam