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Birds and the Farmer

The Hawks of the Canadian Prairie Provinces in Relation to Agriculture

By P. A. Taverner

Lost City

The Forgotten Dwellings of a Forgotten People in New Mexico Photographs copyright by E. M. Newman

By Charles d*amp*apos;Emery

The Yellowing of Paper

A Study of the Causes or Principal Factors Producing this Deterioration

By Alfred B. Hitchins

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    April 05, 1919

    Reanimate Your Brain

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