Proteomics. Proteomic approaches to characterize protein modifications : new tools to study the effects of environmental exposures / Daniel C. Liebler -- Chemical toxicology. The three modern faces of mercury / Thomas W. Clarkson ; Understanding the human health effects of chemical mixtures / David O. Carpenter, Kathleen Arcaro, and David C. Spink -- Drinking water. U.S. drinking water challenges in the twenty-first century / Ronnie B. Levin ... [et al.] ; Assessing exposure in epidemiologic studies to disinfection by-products in drinking water : report from an international workshop / Tye E. Arbuckle ... [et al.] ; Drinking water contaminants and adverse pregnancy outcomes : a review / Frank Bove, Youn Shim, and Perri Zeitz ; Use of mechanism-based structure-activity relationships analysis in carcinogenic potential ranking for drinking water disinfection by-products / Yin-Tak Woo ... [et al.] -- Air pollution. Biologic effects of oil fly ash / Andrew J. Ghio .. [et al.] ; Use of an index to reflect the aggregate burden of long-term exposure to criteria air pollutants in the United States / Amy D. Kyle .. [et al.] ; Diesel exhaust and asthma : hypotheses and molecular mechanisms of action / Robert J. Pandya ... [et al.] -- Environmental medicine. Environmental medicine in Germany : a review / Hans Joachim Seidel ; Perspectives on the chemical etiology of breast cancer / Lillian S. DeBruin and P. David Josephy.