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Subject: Air quality
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Lake County Independent, 28 Mar 1902, p. 7 ...Lake County Independent, 28 Mar 1902, p. 7 ...
Lake Shore News (Wilmette, Illinois), 2 Jan 1913, p. 12 Fresh air and moisture should be available in classrooms by opening windows in the classrooms as a health measure to the students.Lake Shore News (Wilmette, Illinois), 2 Jan 1913, p. 12 Fresh air and moisture should be available in classrooms by opening windows …
Lake County Independent and Waukegan Weekly Sun, 10 Feb 1911, Section 2, p. 9 ...Lake County Independent and Waukegan Weekly Sun, 10 Feb 1911, Section 2, p. 9 ...
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