• 1 · Religion and Magic
• 2 · Nature
• 3 · Human Being, Man in General
• 4 · Society, Civilization, Culture
• 5 · Abstract Ideas and Concepts
• 6 · History
• 7 · Bible
• 8 · Literature
• 9 · Classical Mythology and Ancient History

• Top
• 4 · Society, Civilization, Culture
• 49 · education, science and learning
• 49L · writing and letters
• 49L1 · letters, alphabet, script

49L10 · invention of letters

• 49L10(+2) · invention of letters (+ scholar, scientist in non-work situations)
• 49L10(+4) · invention of letters (+ professional clothes of scholar, scientist)