Encyclopedia Britannica in electronic version. Besides its scientific level items includes biographies, atlas, timeline, media, news articles and headlines.
Encyclopædia Britannica, Inc., is a global educational publisher with
products that promote knowledge and learning. We provide timely,
relevant, and trustworthy information and instructional products used in
schools, universities, homes, libraries, and workplaces throughout the
world.
Britannica is online, in e-books, and on mobile devices. Britannica is
math, science, and social studies. Britannica is for the 2nd-grader
learning math, the teacher explaining the laws of gravity, and the
lifelong learner trying to understand the latest political crisis.
The webpage direction is: http://www.britannica.com/?cameFromBol=true