Books are useful for in-depth information, including: historical context, overview, synthesis and analysis of information.
Often a chapter or two, rather then the entire book, are all that may be relevant for your topic.
What is BANC?
BANC is the library's online catalog. It contains records for all of the physical items in our library, such as books and DVDs, but it also contain records for electronic items, such as streaming videos and ebooks.