Call numbers will indicate where an item is in the Library based on its collection.
Here are links to some e-reference resources. Be aware that your topic might be covered best by a print reference resource. If you are unable to find a suitable reference article ask Linda or the person at the Ask desk for help finding the best source.
Many, if not most, E-brary books are available in WorldCat Research Station. You might also go to the Ebrary link found on the main Zondervan Library page.