I am looking for a good medical dictionary/encylopedia for graduate students, who are not familiar with medicine.

Do we have any good online resources?

!!Answer

NAICS codes are useful to have when trying to find industry information. While not required in most databases, knowing it allows you to get to the info you need *a lot* faster.

NAICS search boxes on Census site.

There are a lot of ways to find NAICS codes...here are a couple of easy ways:

U.S. Census Bureau
- Go to the U.S. Census Bureau site;
- click NAICS in the Business & Industry section;
- either search by keyword or click "For 2007 NAICS" under the search boxes on the left. That will allow you to browse through all of the codes and quickly get definitions for each code so you know you're choosing the right one for your industry.
D&B Million Dollar Database: if you're researching a specific company, look that company up in D&B to see what they use as their primary/secondary NAICS codes.