| This page contains an extensive listing of links to sites related to earth science and geology. It is part of the web site of the University of Southampton, UK. |
| This site contains the Geo-Information Gateway – an extensive, annotated directory of web-based information sources, most of which have either a geological or a geographical focus. |
| A well categorised source of geological web links. |
| A useful of the WWW Virtual Library dealing with soils and substrates. |
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