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The search for purity : a retrospective policy analysis of the decision to chlorinate Cincinnati's public water supply, 1890-1920 / Colleen K. O'Toole.

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The search for purity : a retrospective policy analysis of the decision to chlorinate Cincinnati's public water supply, 1890-1920 / Colleen K. O'Toole.

Studies of the efficiency of water purification processes / by H.W. Streeter.

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Active filters:

The search for purity : a retrospective policy analysis of the decision to chlorinate Cincinnati's public water supply, 1890-1920 / Colleen K. O'Toole.

Studies of the efficiency of water purification processes / by H.W. Streeter.