Keep Earth clean, blue & green : environmental activities for young people /
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| Main Author: | |
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| Other Authors: | |
| Format: | Book |
| Language: | English |
| Published: |
New York :
Citation Press,
1976.
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| Physical Description: | vi, 250 p. : ill. ; 21 cm. |
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| Bibliography: | Bibliography: p. 227-236. |
| ISBN: | 0590074601 0590094033 (pbk.) |