British Library On Demand
British Library On Demand offers pay-as-you-go and access to articles from over 296,000 international research journals, in fields ranging from aeronautics to agriculture, from pharmacy to law. On Demand also provides free table of contents searching, with the ability to order and pay for items of interest online by credit or debit card. There is no need to subscribe in order to use the service; users just need to register using an email address and password to order articles singly or several at a time. Nearly 20% of the articles available can be downloaded instantly and the service currently supplies around half of orders this way. PERI supports the use of On Demand for online searching and the British Library’s Standard Service for document ordering. This service delivers electronic documents via unique download links and paper documents by airmail.