The <a href="https://en.wikipedia.org/wiki/Helsinki_Metro" id="mwARE" rel="mw:WikiLink" title="Helsinki Metro">Helsinki Metro</a>, the first <a href="https://en.wikipedia.org/wiki/Rapid_transit" id="mwARI" rel="mw:WikiLink" title="Rapid transit">rapid transit</a> system of Finland, is opened to the general public.<sup about="#mwt44" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-6"}}' id="cite_ref-6" rel="dc:references" typeof="mw:Extension/ref"><a href="./August_2#cite_note-6" id="mwARM" style="counter-reset: mw-Ref 6;"><span class="mw-reflink-text" id="mwARQ">[6]</span></a></sup><sup about="#mwt48" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-7"}}' id="cite_ref-7" rel="dc:references" typeof="mw:Extension/ref"><a href="./August_2#cite_note-7" id="mwARU" style="counter-reset: mw-Ref 7;"><span class="mw-reflink-text" id="mwARY">[7]</span></a></sup>
<span class="mw-reference-text" id="mw-reference-text-cite_note-6"><cite about="#mwt41" class="citation book cs1 cs1-prop-foreign-lang-source" id="CITEREFTolmunen2002">Tolmunen, Tapio (2002). <i id="mwB18">Mutkatonta matkaa vuodesta 1982. Raka spår från år 1982</i> (in Finnish). Helsinki: Helsingin kaupungin liikennelaitos. pp.<span id="mwB2A" typeof="mw:Entity"> </span>43–44. <a class="mw-redirect" href="./ISBN_(identifier)" id="mwB2E" rel="mw:WikiLink" title="ISBN (identifier)">ISBN</a><span id="mwB2I" typeof="mw:Entity"> </span><a href="./Special:BookSources/951-8926-84-0" id="mwB2M" rel="mw:WikiLink" title="Special:BookSources/951-8926-84-0"><bdi id="mwB2Q">951-8926-84-0</bdi></a>.</cite><span about="#mwt41" class="Z3988" id="mwB2U" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&amp;rft.genre=book&amp;rft.btitle=Mutkatonta+matkaa+vuodesta+1982.+Raka+sp%C3%A5r+fr%C3%A5n+%C3%A5r+1982&amp;rft.place=Helsinki&amp;rft.pages=43-44&amp;rft.pub=Helsingin+kaupungin+liikennelaitos&amp;rft.date=2002&amp;rft.isbn=951-8926-84-0&amp;rft.aulast=Tolmunen&amp;rft.aufirst=Tapio&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3AAugust+2"></span><link about="#mwt41" href="./Category:CS1_Finnish-language_sources_(fi)" id="mwB2Y" rel="mw:PageProp/Category"/></span>