Links below search book collections.
LVC Books searches books--ebooks and print--that LVC owns. WorldCat is database that searches 77,000 worldwide library catalogs. Books found in WorldCat, may require you to use ILL/Interlibrary Loan/Tipasa to get copy.
Ebooks, also called electronic books, digital books, full-text books, or online books, can be accessed 24/7 from any location.
Ebooks allow one to search the entire full-text of the books, which can be both an advantage and a disadvantage.