[Free Registration/Login Required] Want to teach about the Dewey Decimal System? This flipchart will help!

The Diagnostic and Statistical Manual of Mental Disorders is the manual referred to by professionals who work with individuals with mental health disorders, or in a variety of settings, such as research. It provides a system of...

From the Trinity Mineral Company web site. Crystal systems and crystal classes are explained. A table lists the seven crystal systems and the various classes within each system. Colored diagrams depict the geometric structure of each...