The Eisenhower National Clearinghouse for Mathematics and Science Education also provides lots of information, links, and resources for teachers. (educationworld.com)
Check this list from National Clearinghouse for Alcohol and Drug Information to help you determine whether you may have a problem with alcohol or drugs. (realtormag.realtor.org)
A recently launched Web site is designed to serve as an online national clearinghouse and research center to help fight consumer fraud and other economic crimes. (lawsitesblog.com)