автор: Paul A. Baron

PRAMOD KULKARNI DSc, is a Physical Scientist, Senior Service Fellow, at the Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, and an Adjunct Assistant Professor in the Environmental Engineering and Science Program at the University of Cincinnati. The late PAUL A. BARON Ph D, was a Physical Scientist at the Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health. KLAUS WILLEKE Ph D, is Professor Emeritus of Environmental Health at the University of Cincinnati.