11. Co-ordinates, elevation and distances given according to a 1995-96 Bulgarian topographic survey . 12. More recently, in 2007, a topographic survey was carried out for the Heather and Hillforts Project. 13. The "'1st Topographic Survey Squadron "'is a unit of the Australian Army. 14. Shortly after Rockwell s death, his wife donated 36 volumes of topographic survey reports to the Oregon State Library. 15. Existing topographic survey maps, because of their comprehensive and encyclopedic coverage, form the basis for much derived topographic work. 16. The rock was mapped from a topographic survey of the region made from December 8, 1995 to February 8, 1996. 17. On December 8, three workers started a topographic survey of what would become Ault Field, about four miles to the north. 18. As part of the Heather and Hillforts Project a topographic survey was commissioned, which took place between December 2006 and January 2007. 19. Data from the topographic survey Tangra 2004 / 05 was used also in the 2008 Bulgarian map of Livingston, Greenwich, Smith Islands. 20. Each flyby would cover a different sector of Europa in order to achieve a medium-quality global topographic survey , including ice thickness.
