We provide here links to some Reference Materials available on Internet. The list is not exhaustive. MacTutor History of Mathematics Archive. Provided by the University of St. Andrews, Scotland, is one of the most exhaustive Mathematics history sites on Internet offering information on over 1100 mathematicians.
Access can be alphabetical or chronological.
The site is searchable. The Merck Manual Long one of the standard medical reference texts, The Merck Manual is now available on the web. Access to the manual is free of charge, but registration is required for first-time users. There is no search engine, but the multilevel index provides precise content information. The text is presented exactly as it appears in the printed version, complete with tables and figures, with the addition of a few hypertext cross-references to related material in the manual.