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Figure 7 from Pairing of Pentagonal and Heptagonal Carbon Rings in the Growth of Nanosize Carbon Spheres Synthesized by a Mixed-Valent Oxide-Catalytic Carbonization Process | Semantic Scholar
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organic chemistry - Lines on inside of hexagonal shapes of structure diagrams - Chemistry Stack Exchange
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An arrangement of molecular structure of hexagon carbon ring in (a) one... | Download Scientific Diagram
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