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2006.
2006.
2006.
“As suburbs grow, so do environmental fears”
http://www.usatoday.com/tech/science/2005-12-27-suburbs-environment_x.htm.
2005.
2005.
2005.
2003.
2003.
2002.
“Young scientists join pros in RPCS research”
31(8): 1 & 8.
2002.
2002.
2002.
2000.
1998.
“Ecology's last frontier: studying urban areas to monitor the impact of human activity”
XLIV #23: A18.
1998.
1998.
“Study tracks impact on desert”
49 (288): A1.
1997.
1997.
2001.
1989.