DavidB4-bot
→top: clean up & uniformity
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CSGuy
no edit summary
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Samwell
wording
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Pachyderm
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Mtur
Removing cut and paste formatting. Adding links.
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DeanS
New page: *A light-colored, frothy volcanic rock, usually of dacite or rhyolite composition, formed by the expansion of gas in erupting lava. Commonly perceived as lumps or fragments of pea size and...
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