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A. R. Wolters, A. Piersma · Geografisch Instituut, Rijksuniversiteit Groningen
178 sayfa · 1987
Natural areas / Nature conservation / Agriculture / Environmental aspects / Agricultural pollution
Analysis of POPSAT gravity model errors
K. F. Wakker, B. A. C. Ambrosius, H. J. D. Piersma, Technische Hogeschool Delft, European Space Agency · Delft University of Technology, Dept. of Aerospace Engineering
104 sayfa · 1983
Gravity / Measurement / Artificial satellites / Orbits / Tracking