Pynciau a Argymhellir
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- Politics and government 16,881 canlyniadau
- History and criticism 16,845 canlyniadau
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- Social aspects 10,401 canlyniadau
- Philosophy 9,667 canlyniadau
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- Social conditions 9,219 canlyniadau
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- Economic conditions 7,183 canlyniadau
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- Political aspects 3,385 canlyniadau
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- Religion 3,282 canlyniadau
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- Economic policy 2,983 canlyniadau
- Art 2,931 canlyniadau
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- Law 2,902 canlyniadau
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- Study and teaching (Elementary) 2,766 canlyniadau
- Design and construction 2,652 canlyniadau
- Forests and forestry 2,564 canlyniadau
- Architecture 2,554 canlyniadau rhagor...