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200 00$aInvestigating environmental changes $egrade 2 : stem road map for elementary school /$fedited by Carla C. Johnson, Janet B. Walton, Erin Peters-Burton
210  1$aArlington, Virginia :$cNational Science Teachers Association,$d[2019]
210  4$d©2019
215   $a1 online resource (177 pages)
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606   $aEnvironmental sciences$xStudy and teaching (Elementary)$zUnited States
606   $aEnvironmental education$zUnited States
606   $aEarth sciences$xStudy and teaching (Elementary)$zUnited States
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702   $aWalton$b Janet B.
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