Reseau Geodesique Francais 1993 v2b
EPSG
Institut Geographique National (IGN); http://www.ign.fr
2023-11-30
Reversible geoid model transformation.
Reversible alternative to RGF93 v2b to NGF-IGN78 height (3) (code 10506).
Geog3D to Geog2D+GravityRelatedHeight (IGN2009)
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