Diagram of Suburban train network around Lisbon (CP and Fertagus)
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<span class="int-own-work" lang="en">Own work</span><br>reference source: <a rel="nofollow" class="external free" href="http://www.cp.pt/cp/displayPage.do?vgnextoid=3836d5abe2a74010VgnVCM1000007b01a8c0RCRD">http://www.cp.pt/cp/displayPage.do?vgnextoid=3836d5abe2a74010VgnVCM1000007b01a8c0RCRD</a>