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This category in: Pennsylvania: Pittsburgh Region
Archaeology

Christine Davis Consultants
(Verona) http://www.chrisdavis.net/
GAI Consultants
(Monroeville) GAI Consultants, Inc Intergrating Engineering and the Sciences.Mastering Technolgical Challenges Worldwide
http://www.gaiconsultants.com/
Heberling Associates
(Bellevue) Overview of Heberling Associates, Inc. advisors on matters concerning historical research, archaeological research, and cultural resource management.
http://www.heberlingassociates.com/
Reed Farmstead Archaeological Site
(Moon Township) http://www.reedfarmstead.com/
Skelly and Loy
(Monroeville) http://www.skellyloy.com/
Astronomy

Amateur Astronomers Association of Pittsburgh
(Pittsburgh) http://3ap.org/
Henry Buhl Jr. Planetarium
(Pittsburgh) The Official SHOW SALES Website of the Buhl Planetarium in Pittsburgh, now located at the Carnegie Science Center, One Allegheny Ave., Pittsburgh, PA 15212.
http://www.buhlplanetarium.org/
Ecology

Allegheny Watershed Network
(Pittsburgh) Copyright of the Pennsylvania Environmental Council 2003. All text and pictures property of the Pennsylvania Environmental Council. For problems or questions regarding this website contact ...
http://www.pecwest.org/
TRFN - Environmental Organizations
(Pittsburgh) Links to environmental organizations in Pittsburgh, southwestern Pennsylvania, and throughout the world.
http://www.carnegielibrary.org/subject/environment/orgs.html
History

Battle of Homestead, 1892
(Homestead) http://home.earthlink.net/~homestead1892/BoH/
Practical History: The Homestead Strike, 1892
(Homestead) Emma Goldman; Alexander Berkman; USA coHomestead Strike 1892; nineteenth century; Andrew Carnegie; Carnegie Steel Company; steel workers' strike; Henry Clay Frick;Emma Goldman; Alexander ...
http://www.geocities.com/CapitolHill/Senate/7672/homestead.html
Literature - Comic Books

Copacetic Comics Company
(Pittsburgh) find us on the map read our mission statement visit Fairvale powered by BEM COPACETIC COMMODITIES things we sell +books +CDs +comics +DVDs +art COPACETIC SELECT A closer look at some of our ...
http://home.earthlink.net/~copaceticcomicsco/
Psychology

Moravec, H. P.
(Pittsburgh) Hans P. Moravec home page Hans Moravec Mobile Robots since 1963 Hans Moravec Robotics Institute Carnegie Mellon University Pittsburgh, PA 15213-3890 USA tel: (412) 268-3829 fax: (412) 268-5895 ...
http://www.frc.ri.cmu.edu/~hpm/
Science

Allegheny Land Trust
(Allegheny County) Allegheny Land Trust is an independent Pennsylvania non-profit organization incorporated in 1993 to protect lands of natural value in and adjacent to Allegheny County.
http://www.alleghenylandtrust.org/
Friends of the Riverfront
(Pittsburgh) http://www.friendsoftheriverfront.org/
Pittsburgh Tissue Engineering Initiative
(Pittsburgh) tissue engineering and regenerative medicine global resource
http://www.ptei.org/
Watershed Atlas of the Allegheny River
(Pittsburgh) http://www.watershedatlas.org/
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