This installment in the series includes 55 citations with abstracts drawn from ProQuest's Environmental Sciences & Pollution Management and other databases. The overview contains terms that are hyperlinked to the glossary.

• Laboratory Director, AMA Analytical Services Inc., Lanham MD
  
• B.S. Geology, University of Maryland, College Park

• Managing Editor, Natural Sciences, ProQuest, Bethesda MD
  
• B.S. Geology, University of Maryland, College Park

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