Materials -
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Materials - Subtopics
Materials that expand upon freezing
Natural materials
Transparent materials
Goods (economics)
Objects by material
Biodegradable materials
Building materials
Semiconductors
Artificial materials
Seals (mechanical)
Nuclear materials
Hazardous materials
Incense material
Powders
Gemstones
Material handling
Dental materials
Waxes
Chemical substances
Fictional materials