11. Moldova has only part of the Struve Geodetic Arc transborder site. 12. The curriculum included arithmetic, calligraphy, written composition and geodetics . 13. In 1953, she retired from her position at the Geodetic Institute. 14. Among his other inventions were the geodetic airframe and the earthquake bomb. 15. Nowadays GPS antennas used for geodetic positioning use a similar mounting system. 16. This theory solved several astronomical, geodetic , mechanical and mathematical problems. 17. According to the Bureau of Geodetic Surveys, the land elevation is. 18. He was appointed head of the Coast and Geodetic Survey in 1915. 19. He represented the United States at various international geodetic conferences and congresses. 20. Both are geodetic reference systems based on slightly different assumptions and measurements.