Integrated environmental assist once act :  hearing before the Subcommittee on Health and Environment of the Committee on Intersate and Foreign Commerce, House of Representatives ninety-sixth congress 

 - Washington, D. C. :  United States Government Printing Office,  1977 
 - 165 p. ;  23 cm. 
<br/><br/> Serial no.96-153 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunication systems<br/>Digital communication systems<br/>Computer networks
<br/><br/><label>Dewey Class. No.: </label>621.38