sketch map of Bellona Island, Solomon Islands
British Solomon Islands Protectorate, <a href="//commons.wikimedia.org/wiki/Derivative_works#What_is_a_derivative_work?" class="mw-redirect" title="Derivative works">derivative work</a> <a href="//commons.wikimedia.org/wiki/User:L%C3%A4mpel" title="User:Lämpel">Lämpel</a>
1968
<a rel="nofollow" class="external free" href="https://openresearch-repository.anu.edu.au/handle/1885/145248">https://openresearch-repository.anu.edu.au/handle/1885/145248</a>