Westlaw (Energy & Environment)Primary and secondary sources including Wooley & Morss, Clean Air Act Handbook; Comparative Environmental Law and Regulation; Daniel R. Mandelker, NEPA Law & Litigation, 2d; CCH Environmental Law; Zuckerman & Raskoff, Environmental Insurance Litigation: Law & Practice; Manaster & Selmi, State Environmental Law; Broun & O'Reilly, RCRA & Superfund: A Practice Guide; 50 State Surveys - Environmental Law; and numerous Energy & Environment Legal Newspapers & Newsletters