CHOICE, December 2009 : ''The Encyclopedic Dictionary of Hydrogeology features 382 pages of definitions for over 2,000 alphabetically arranged terms related to hydrogeology, six appendixes (135 pages), and a two-page bibliography of major texts on hydrogeology. [Its] definitions include equations, tables, and illustrations to explain terms when needed. Summing Up: Recommended. Graduate students through professionals/practitioners.''