Introduction to environmental toxicology : impacts of chemicals upon ecological systems / Wayne G. Landis, Ming-Ho Yu. Landis, Wayne G. Yu, Ming-Ho, 1928- Pollution Environmental aspects. Environmental toxicology. QH545.A1 L35 1995 628.5 20 GUI Includes bibliographical references and index. Boca Raton, FL : Lewis Publishers, c1995. c1995. 1995 Text 328 p. : eng