The computer catalog should be checked for books on your subject. UML's Dissertations Database will give you a list of all UML theses and dissertations up to 1985. ProQuest's Dissertations Abstracts will allow you to search all dissertations since 1870. For recent dissertations, you may access the first 24 pages of any dissertation. Copies of all UML/UMA theses/dissertations 1998- are free on ProQuest's site.
Some good reference books on Toxicology and Analytical methods iinclude:
Encyclopedia of Analytical Chemistry: Applications, Theory and Instrumentation. 16v. Wiley, 2000. REF QD 71.5 .E52 2000
Encyclopedia of Analytical Science. 10v. Elsevier, 2005. REF QD 71.5 .E539 2005.
Encyclopedia of Occupational Health and Safety. 4v. 4th ed. International Labour Office, 1998. REF RC 963.3.E53 1998.
Handbook of Environmental Fate and Exposure Data for Organic Chemicals. 5v. Lewis, 1989. REF TD 176.4 .H69 1989
Pohanish, Richard, Wiley Guide to Chemical Incompatibilities. Wiley, 2003. REF T 55.3.H3 P647 2003.