Barry are you talking about blog style pages where you see multiple articles from the front end?
If so there are a few ways around this - you can edit an article and place a 'read more' into the content - then when you look at the multi artcle layout you can click the 'read more' and this will take you to the URL just for the specific article.
If you are publishing a search module you can search for an article and this will also give you a link to a specific article.
You could publish a sitemap, such as Xmap
extensions.joomla.org/extensions/3066/details install this then in your menu add a link to the Xmap componet - when you browse the front end and click this link you will see a list of all article URLs.
Hope this helps.