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Resources:
American Concrete Pipe Association
A nonprofit organization, composed primarily of concrete pipe manufacturers in the U.S. and Canada. ACPA provides members with research, technical and marketing support to promote the use of concrete pipe products for drainage and pollution control applications.
http://www.concrete-pipe.org/
The Verve Pipe
Official site includes a history, member profiles, sound and video files, tour dates, articles and reviews, and merchandise.
http://www.thevervepipe.com
Advanced Drainage Systems [ADS]
ADS Advanced Drainage Systems The largest polyethylene pipe manufacturer in the world. This Web site offers technical support, on-line quotes, product catalog and installation tips.
http://www.ads-pipe.com/
U.S. Pipe
Designs and produces ductile iron pipe, fittings, valves, hydrants and related products.
http://www.uspipe.com/
National Park Service: Parknet
Official site, with extensive information on America's National Parks and their management.
http://www.nps.gov/
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