##
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## 5 References

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     1. EPSG/POSC Projection Coding System Tables. Available via FTP to:
          ftp://ftpmcmc.cr.usgs.gov/release/geotiff/jpl-mirror/tables

     2. TIFF Revision 6.0 Specification: A PDF formatted version
        is available via FTP to:
    ftp://ftp.adobe.com/pub/adobe/DeveloperSupport/TechNotes/PDFfiles/TIFF6.pdf
         PostScript formatted text versions available at:.
           ftp://sgi.com/graphics/tiff/TIFF6.ps.Z   (compressed)
           ftp://sgi.com/graphics/tiff/TIFF6.ps     (uncompressed)
     3. LIBGEOTIFF -- Public Domain GeoTIFF library, available via anonymous
        FTP to:
          ftp://ftpmcmc.cr.usgs.gov/release/geotiff/jpl-mirror/code
     4. LIBTIFF -- Public Domain TIFF library, available via anonymous
        FTP to:
          ftp://sgi.com/graphics/tiff/

     5. Spatial Data Transfer Standard (SDTS) of the USGS.
       (Federal Information Processing Standard (FIPS) 173):

          ftp://sdts.er.usgs.gov/pub/sdts/

            SDTS Task Force
            U.S. Geological Survey
            526 National Center
            Reston, VA 22092

            E-mail: sdts@usgs.gov
     6. Map use: reading, analysis, interpretation.
           Muehrcke, Phillip C. 1986. Madison, WI: JP Publications.

     7. Map projections: a working manual. Snyder, John P. 1987.
        USGS Professional Paper 1395.
        Washington, DC: United States Government Printing Office.
     8. Notes for GIS and The Geographer's Craft at U. Texas, on the
        World Wide Web (WWW) (current as of 10 April 1995):

         http://wwwhost.cc.utexas.edu/ftp/pub/grg/gcraft/notes/notes.html
     9. Digital Geographic Information Exchange Standard (DIGEST).
         Allied Geographic Publication No 3, Edition 1.2 (AGeoP-3)
         (NATO Unclassified).
    10. POSC Petrotechnical Open Software Corporation Web site:
          http://www.posc.org/

``