Essentials of environmental health / Robert H. Friis. Friis, Robert H. Environmental health. Environmental Pollution. RA565 .F75 2012 616.98 23 FRE Includes bibliographical references and index. Sudbury, MA : Jones & Bartlett Learning, c2012. c2012. 2012 Text xxvi, 442 p. : eng Essential public health Essential public health.