1997 Bynum, W.F. and Roy Porter. Companion encyclopedia of the history of medicine . McNeil, Ian, ed. An Encyclopaedia of the history of technology . Articles can be printed from PDF files so that they look identical to the paper version, including correct pagination.
Coverage varies according to journal.
Periodicals Contents Index One of the few electronic tools helpful in locating primary source material. It includes an entry for each article or book review appearing on the table of contents page of each issue. Uncover and Reveal CARL UnCover is an online periodical article delivery service and a current awareness alerting service. English language periodicals in its database. More information is available online, especially the Help page and the UnCover Title and Subject Lists.