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country edition:UNITED STATES
theme:Математика и естественные науки
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PETERSEN, CHRISTINE
Alternative Energy / Petersen, Christine ... – USA : Children's Press, 2004. - 47 p.– (A True Book. . . – 0-516-22804-8 : 300 tg.
UDC:
502
Shelf code:
Л 2012/37505
Subject headings
- Protection of nature
Keywords
renewable energy source Juvenile literature, power resources
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RHONDA, LUCAS DONALD
Air Pollution / Rhonda, Lucas Donald ... – USA : Children's Press, 2001. - 47 p., ill.;– (A True Book. . . – 0-516-22191-4 : 300 tg.
UDC:
502/504
Shelf code:
Л 2012/37500
Subject headings
- Nature. Protection of natural resources
Keywords
pollution, air pollution
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