Conradson number

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Radiochemistry — is the chemistry of radioactive materials, where radioactive isotopes of elements are used to study the properties and chemical reactions of non radioactive isotopes (often within radiochemistry the absence of radioactivity leads to a substance… … Wikipedia
Voluntarism (action) — Voluntarism is the use of or reliance on voluntary action to maintain an institution, carry out a policy, or achieve an end. [Definitions of voluntarism at http://www.bartleby.com/61/44/V0144400.html and… … Wikipedia

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