conversion Scientific Committee for Antarctic Research (SCAR) Geospatial Information Group. 2005-04-14 true false Topographic mapping (medium scale). 17258 SCAR IMW SS55-57 After: Sievers, J. and H. Bennat (1989). "Reference systems of maps and geographic information systems of Antarctica." Antarctic Science 1(4): 351-362. 0 -90 153 -72.4 -75.2 0 0