Titlebook: Vertical Reference Systems; IAG Symposium Cartag Hermann Drewes,Alan H. Dodson,Pedro Sandoval Conference proceedings 2002 Springer-Verlag B

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Conference proceedings 200258 stations during the lAG Scientific Assembly at Rio de Janeiro, in 1997. This reference frame was already adopted by several South American countries as the basis for their new national horizontal geodetic datums (SIRGAS Working Group II). To overcome the problems of the heterogeneous vertical (he

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