Gravity, geoid and space missions : GGSM 2004 : IAG international symposium : Porto, Portugal : August 30-September 3, 2004. : Aug 2004, Porto, Portugal. (International Association of Geodesy Symposia ; 129)
Gravity, geoid and space missions : GGSM 2004 : IAG international symposium : Porto, Portugal : August 30-September 3, 2004. : Aug 2004, Porto, Portugal.
(International Association of Geodesy Symposia ; 129)