Re: Blackboards vs. Whiteboards |
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Barry Margolin (barmar@alum.mit.edu) Wed, 30 Mar 2005 20:28:58 -0500
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In article <telecom24.137.12@telecom-digest.org>, hancock4@bbs.cpcn.com wrote:
> Seems to me there's nothing wrong with blackboards and nothing to be
This web site mentions chalk dust as a common trigger of asthma attacks
http://kidshealth.org/kid/health_problems/allergy/asthma.html
A google search shows a number of other pages mentioning similar
Barry Margolin, barmar@alum.mit.edu
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