http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
1 videodisc (20 min.) : sound, color ; 4 3/4 in.
"Cities around the United States grew up around the great arterial waterways. In the West, the Columbia and Willamette have seen 150 years of commerce and change and unfortunately have paid the price of the industrial revolution. It's not the water so much as the sediment on the bottom where PCB's and other toxins are threatening fish and other wildlife. There is a push to reverse the damage of the past by removing the worst of this sediment. This is a complex issue with an even more complex solution but we show you how they're doing it.."--Container.
Willamette River -- Fox River -- The four R's -- Remediation dredging.