• 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
• 2 · Nature
• 25 · earth, world as celestial body
• 25D · rock types; minerals and metals; soil types

25D2 · soil types

• 25D21 · earth (soil type)
• 25D22 · gravel (soil type)
• 25D23 · sand (soil type)
• 25D24 · clay (soil type)
• 25D25 · peat (soil type)
• 25D26 · mud (soil type)
• 25D29 · dust (soil type)