For Math Education: ERIC (government version)
Cutting edge research: ArXiv
Citation searching and multidisciplinary research: Scopus
Books and Electronic Books
Enter a topic to search our catalog for physical or electronic books.
Lecture Notes in Mathematics (1997-present)
Mathematics and Statistics books from Springer (2009, 2011-present)
Electronic Journal Collections
I have provided these links for people who want to browse current issues. If you are searching for all the articles on a particular topic, I recommend using MathSciNet or Current Index to Statistics.
Major individual subscriptions
Historical Mathematics Texts
Historical Math Monographs from Cornell University Library