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Encyclopedia :: encyclopedia : Limestone (Site not responding. Last check: ) |
 | | Limestone may be crystalline, clastic, granular, or dense, depending on the method of formation. |
 | | Limestone is especially popular in architecture, and many landmarks around the world, especially in North America and Europe, are made primarily of the material. |
 | | Limestone is used as a facade on some skyscrapers, but only in thin plates for covering rather than solid blocks. |
| www.hallencyclopedia.com /Limestone (437 words) |
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