Alexander_Calciumbibl

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=Bibliography=

**Book Source:**
Heiserman, L. David. "Calcium." __Exploring Chemical Elements and their Compounds__. 1992.

**Internet Sources:**
__Health Discovery__. 1 February 2008. <http://health.discovery.com/centers/womens/calcium/calcium_02.html>.

__Seed to Plate.__ 1 February 2008. <[|www.seedtoplate.com/organic-certification.html]>.

__Zephyrus.__ 31 January 2008. .

__Web Elements.__ 1 February 2008. .

__David Darling.__ 2 February 2008. .

__Crystal Radio.__ 1 February 2008. <[|www.crystalradio.net/minerals/index.shtml]>.

__Chemical Element.__ Bentor, Yinon. 2 February 2008. <http://www.chemicalelements.com/elements/ca.html>.