Covers scholarly journals in a range of disciplines. Best when you are using keywords to run a search.
Searches a HUGE set of scholarly material. Can be overwhelming. Best when you already have the citation for what you are looking for. "Cited by" links connect you with studies that have cited a particular study.
Need books? WorldCat connects you with book collections from libraries all over the world. Use Interlibrary Loan to bring in what you need -- for free!
Quickly bring in books and articles from other libraries. UNLV Libraries covers the costs.