As you may already have noticed, SOLO has recently improved the way it displays search results whenever multiple editions or versions of the same item are found. Results for such items are now displayed as in the example below:
Simply click on 'View all n versions' to see the individual records for all the different editions and versions. These will be listed in date order with the newest at the top, though you can change this sort order if you wish.
If you want to see only the edition(s) held by a particular library, you can refine your results using the menu options on the left-hand side of the search results screen - simply click on the name of the library you are interested in. (You may need to click on 'more' first to see the full list of names.)