| LC control no. | sh2001000783 |
|---|---|
| LC classification | QD181.C2 Chemistry |
| Topical heading | Calcium compounds |
| Found in | The Amer. Heritage dict. of the Engl. lang., via WWW, Oct. 18, 2001 (calcium: A silvery, moderately hard metallic element ... It occurs naturally in limestone, gypsum, and fluorite, and its compounds are used to make plaster, quicklime, Portland cement, and metallurgic and electronic materials) |
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