Search JSTOR limited to the field of mathematics. You might want to filter out book reviews unless you're interested in using those to identify books to read.
The primary place to find scholarship on world history. (For U.S. and Canadian History, use America: History and Life). Covers publications from 1955 - present. Make use of the ability to limit by time period discussed.
Access full-text ethnohistories and ethnographies on cultures from around the world. The documents are organized into cultures and ethnic groups and are indexed at the paragraph level.
(Searches through citations, reviews, and author information)
A key index of published literature in mathematics. Each article is reviewed and assigned a subject from the Mathematics Subject Classification. Covers 1810 - current.
(Searches through citations, subject indexing, and some full text)
A vast index of literature from the sciences, social sciences, and humanities. Also offers cited reference searching to see who has cited a particular document. 1898 - current.