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• SACS Reading Room
  A selection of articles from previous issues of Compass & Tape

• On-Line Geomagnetic Declination A website for obtaining geomagnetic declination (from the National Geophysical Data Center

• Digital Map resources (topographic, aerial, DEM's,).

• UIS Cave Symbols from the UIS working group on cave survey and mapping. Select a language and press go.

• An overview on Cave survey software From the BCRA website