We have not carried out a detailed comparison of journal title coverage between the two services, but they can be expected to coincide to a high degree. The most significant difference between the two services, for most users, will be time coverage. When Chadwyck-Healey, the publishers of PCI, embarked on their ambitious project, they did so with a view to offering users an invaluable addition to BIDS ISI, which would complement, not rival it. The nine-year overlap in time coverage provides a generous 'safety net' and adds to the convenience of use. There are also some structural differences between the databases which influence the way in which you can search them.
Users can search in both services by title and abstract keywords, author, and journal title.
An important feature of BIDS ISI is that it allows for citation searching. PCI is not being published with this purpose in mind. Thus you can make efficient use of two of the complementary services available to you from the UK electronic library. Back to top . A lot has been said about the World Wide Web, variously referred to as WWW, the Web, or just 'W'.