• 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

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• 4 · Society, Civilization, Culture
• 47 · crafts and industries
• 47D · machines; parts of machines; tools and appliances
• 47D7 · parts of machines
• 47D7(...) · parts of machines (with NAME)

47D7(HOPPER) · parts of machines: hopper