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Home page and main menu for USGS Pacific Coastal and Marine Science Center in California.

Shows photos of fossils of different types. Browse by location, time period or type.

Electronic facsimile of one of the founding book of the geological sciences, made available by Electronic Scholarly Publishing

Searchable catalog of paper and digital geologic maps, mostly for the U.S. Maps and related data cover: geology, hazards, earth resources, geophysics, geochemistry ...

Netherlands Coordination Office for the United Nations Spatial Data Infrastructure (UNSDI)

This set of 8 volumes published between 1866 and 1890 is a rich resource of information about Illinois geology, landscape and mineral resources.

Easy to use floor plan drawing software

Defines many terms related to oil and gas exploration and production. Includes illustrations.