Do not hide shelf location when no physical copies are available
When there are physical copies of the title available, the shelf location appears on the results page. However, if there are no physical copies on the shelf at any location, that shelf location is hidden and the user must click into a location in order to see the shelf location. It is inconvenient to have that information hidden on the front page.

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Jennifer O'Donnell commented
This is important because it lets patrons know where to look for similar titles on the shelf (esp. for non-fiction).