Random triples
| Subject | Object |
|---|---|
| gptkb:Australian_Bathymetry_and_Topography_Grid | satellite altimetry |
| gptkb:Australian_Bathymetry_and_Topography_Grid | multibeam sonar |
| gptkb:Australian_Bathymetry_and_Topography_Grid | singlebeam sonar |
| gptkb:Australian_Bathymetry_and_Topography_Grid | topographic surveys |