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ABOUT THIS SERIES
Henry Romney
March 28, 1960
While much of the material in this series is original, it is based on factual studies collected from many sources. Both in research and preparation the assistance of Isabel Eberstadt was invaluable. The editors also gratefully acknowledge the stimulating help of Dr. Marion Clawson of Resources for the Future Inc., pioneer of the statistical approach to outdoor recreation.
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March 28, 1960

About This Series

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While much of the material in this series is original, it is based on factual studies collected from many sources. Both in research and preparation the assistance of Isabel Eberstadt was invaluable. The editors also gratefully acknowledge the stimulating help of Dr. Marion Clawson of Resources for the Future Inc., pioneer of the statistical approach to outdoor recreation.

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