Protecting the environment :  30 years of U.S. progress. 

 - Washington D.C. :  U.S. Deprtment of State/Bureau of International Information Programs,   2005. 
 - 53 p. :  ill. ;   29 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental protection.
<br/><br/><label>Dewey Class. No.: </label>363.7