Nautical chart of Pratas Island (Tung-sha Tao, Dongsha Dao) and Pratas Atoll, Cijin (Qijin) District, Kaohsiung, Taiwan (ROC). Located in the South China Sea.
<a href="https://en.wikipedia.org/wiki/Naval_Oceanographic_Office" class="extiw" title="w:Naval Oceanographic Office">Naval Oceanographic Office</a>, <a href="https://en.wikipedia.org/wiki/Washington,_D.C." class="extiw" title="w:Washington, D.C.">Washington, D.C.</a>
<ul><li><a rel="nofollow" class="external free" href="https://library.ucsd.edu/dc/object/bb5018294b">https://library.ucsd.edu/dc/object/bb5018294b</a></li>
<li><a class="external free" href="https://tools.wmflabs.org/zoomable-images/zoomify.php?path=http://library.ucsd.edu/zoomify/bb/50/bb5018294b/&amp;zoom=5">https://tools.wmflabs.org/zoomable-images/zoomify.php?path=http://library.ucsd.edu/zoomify/bb/50/bb5018294b/&amp;zoom=5</a></li></ul>