wells

Type(s): Concept

Definition
- Manmade shafts or holes in the Earth's surface used to obtain fluid or gaseous materials. [USGS Feature Class Definitions http://mapping.usgs.gov/www/ti/GNIS/gnis_users_guide_appendixc.html]

Object id: 1808
Item identifier(s):
[file:/apps/ontopia.net/tomcat/ontopia-5.3.0/topicmaps/ADL-FTT.xtm#id1971]