Here is search logs of 650,000 AOL users. It's very interesting to view search history of particular person and analyze his personality. Let's do it together! Read more about AOL search database scandal or view research papers on web searching.
Timeline of Concrete
The story of concrete from the natural deposit of cement compounds 12,000,000 BC, through the creation of concrete by the Romans to its uses in the 1990s. Short bibliography.