• 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
• 41 · material aspects of daily life
• 41A · housing
• 41A3 · parts (of house or building)

41A34 · staircase

• 41A341 · stairwell
• 41A342 · elevator, lift
• 41A343 · ladder
• 41A34(+0) · staircase (+ variant)