Online Reference Sources in Biology
Many more dictionaries and subject specific encyclopedias are available in the Science Reference Collection on C Level of the Sheridan Library.

 This is the classic handbook of chemical data on elements and compounds; organic and inorganic.

 Access Science is a general science encyclopedia. It also includes a dictionary and is a good source for bibliographic information on scientists.

This online encyclopedia focuses on the life sciences.

 This encyclopedia covers genetics, immunology, proteins, and many other aspects of molecular biology.