Scirus
The most comprehensive science-specific search engine on the Internet. Driven by the latest search engine technology, Scirus searches over 167 million science-specific Web pages.
Academic Index
“A Free metasearch engine accessing tens of thousands of academic reference and research sites recommended by teachers and librarians.”
INFOMINE
“Scholarly Internet Resource Collections.” Built for university-level research by librarians at several research universities
Librarian's Index to the Internet
“Information You Can Trust.” The LII indexes web sites that have been reviewed for accuracy. Subject range includes many public interest as well as academic topics.
The RefDesk
Links to thousands of useful sites, especially under “Reference Resources” and “Refdesk Subject Categories”
State of Iowa Libraries Online (SILO)
Search the online catalogs of many Iowa libraries from one form. Or, you can search many of them individually here.
Google Scholar
“Google Scholar enables you to search specifically for scholarly literature, including peer-reviewed papers, theses, books, preprints, abstracts and technical reports from all broad areas of research.” After identifying a book, click on “Library Search” to find a nearby library that owns it. Full text of many journal articles will be available through the Cowles Library.