The Panopticon/Jane's Spaceships or Spacecraft

Hello to everybody! In TV: Destiny of the Daleks, the Fourth Doctor mentions a guidebook named Jane's Spacecraft of the Universe. In the wiki I found the Eighth Doctor possessed a similar-titled Jane's Spaceships in his library. According to the policies, have I to consider them to different books, worthy of two different pages, haven't I? P.S. I take advantage of this thread to thank everyone is patiently patrolling and correcting my DWC edits! --HarveyWallbanger ☎ 16:32, August 15, 2013 (UTC)