Use 'Advanced Search' if you want to combine or limit terms. Coverage goes back to 1994. This is a good, interdisciplinary index with a unique feature which allows you to search for articles which CITE a particular article. There is a brief guide to using Web of Science, with more in-depth online help. There is a brief guide for using Lexis-Nexis in the Sciences.
Access is available on most public computers.
For further instructions, please contact Meg . There is a brief guide to using Medline, plus lots of online help. OR you can do a Tripod search and select a specific title online. American Chemical Society journals - electronic access to 23 ACS journals, including Journal of the ACS and their newest journal, Organic Letters . These journals have their own search engine.