Little is known about the environmental occurrence of many chemicals we use to maintain and improve the quality of our daily lives, ... This study begins a process of exploring the occurrence of these chemicals in our nation's streams.  -   Robert Hirsch     Quotes
Little is known about the environmental occurrence of many chemicals we use to maintain and improve the quality of our daily lives, ... This study begins a process of exploring the occurrence of these chemicals in our nation's streams. Robert Hirsch
 Quality