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.
The New PL/I ... for PC, Workstation and Mainframe
Eberhard Sturm (2009). Limited preview at Google Books including table of contents and a selection of pages. Introductory book on PL/I including features of the new IBM compilers.