Formerly a Wilson index, but now EBSCO database, which covers many periodicals, yearbooks and monographs in numerous areas of education.

(Part of EBSCO) FULL-TEXT Covers topics such as emotional and behavioral characteristics, psychiatry psychology, mental processes, anthropology, and observational and experimental methods. Includes over 500 peer-reviewed titles.

You have to register, but it's worth it. Tons of technical e-books in many areas : computers, networking, web-design, etc.