Credo Reference recently added the following:

• The Cambridge Handbook of Computational Psychology
• The Cambridge Handbook of Violent Behavior and Aggression
• Dictionary of Environmental Science and Technology, Wiley
• Dictionary of Forensic Psychology, Willan Publishing
• Encyclopedia of Cognitive Science, Wiley
• The Encyclopedia of Public Choice, Springer Science+Business Media
• Encyclopedia of the Human Brain, Elsevier Science & Technology
• Encyclopedia of the Human Genome, Wiley
• Women in the Middle Ages: An Encyclopedia, ABC-CLIO