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Description: |
x, 275 pages : illustrations ; 24 cm. |
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General Note: |
"Proceedings of a symposium held during the AAAS meeting in Philadelphia, Pennsylvania, December 26-31, 1971" -- title page. |
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Bibliography Note: |
Includes bibliographical references and index. |
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Additional Physical Forms: |
Online version: Indicators of environmental quality. New York, Plenum Press, 1972 (OCoLC)609149708 |