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<p>Book digitized by Google from the library of University of California and uploaded to the Internet Archive by user tpb.
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<br>Subjects: googk; water; heat; air; food; bacteria; plants; light; substances; carbon dioxide; googk chapter; coloring matter; running water; ground water; fresh air; north pole; mineral matter; south pole; small amount</div>
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Bertha May Clark</div>
Internet Archive identifier