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The Perfect Library

Works of Ellen Richards

Works of Ellen Richards

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2 works of Ellen Swallow Richards
American industrial and environmental chemist (1842-1911)

This ebook presents a collection of 2 works of Ellen Swallow Richards. A dynamic table of contents allows you to jump directly to the work selected.

Table of Contents:
- Euthenics the Science of Controllable Environment
- The Cost of Shelter
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