Kód: 17140504
Tens of thousands of conduits through embankment dams in the United States are aging and deteriorating. These conduits often were poorly constructed and are not frequently inspected, if at all. Deteriorating conduits pose an incre ... celý popis
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Tens of thousands of conduits through embankment dams in the United States are aging and deteriorating. These conduits often were poorly constructed and are not frequently inspected, if at all. Deteriorating conduits pose an increasingly greater risk for d
1097 Kč
Osobní odběr Praha, Brno a 12903 dalších
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