How to See the Unseen City.

This paper presents different methods and equipments used on how to inspect underground infrastructures, networks, sewers, and pipes in some cities around the world. In New York, underground pipes are inspected using an electronic listening equipment as its first line of defense. Maintenance workers...

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Foilsithe in:IEEE spectrum 44, 6 (2007).
Príomhchruthaitheoir: Upson, S.
Formáid: Alt
Teanga:English
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