Information Impermanence

As you search for information, save your sources, particularly datasets and government publications. Note the date you were last able to access a source in case it isn’t available later. Check the Internet Archive’s Wayback Machine and other repositories for removed data sources or websites.

Citation managers can help you manage the information you save about your sources. You can reference and cite information that is no longer available where you found it. For these citations, include a last accessed date.

Having trouble finding data or a source? Talk with your subject librarian.

Chemical Information Sources

There are many places to find chemical information. You may also want to try searching Chemistry dictionaries and handbooks and key databases. If you are unable to find the data you need, contact your subject librarian.