User:Shresths/Sandbox
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This article was marked by its author as Under construction, but the last edit is older than 30 days. If you want to edit this page, please try to contact its author first (you fill find him in the history). Watch the discussion as well. If the author will not continue in work, remove the template Last update: Sunday, 04 Mar 2012 at 7.18 pm. |
References:
for definition of pollution:
http://www.merriam-webster.com/dictionary/pollution Retrieved 3/3/2012
Biological incidicators Tingey, David T. (1989). "Bioindicators in Air Pollution Research -- Applications and Constraints". Biologic Markers of Air-Pollution Stress and Damage in Forests. (Washington, DC: National Academies Press): 73–80. ISBN 978-0-309-07833-7.
Tobacco Epidemic
http://www.who.int/features/factfiles/tobacco_epidemic/tobacco_epidemic_facts/en/index3.html Retrieved 4/3/2012
