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 - United States. Congress. House. Committee on Intersate and Foreign Commerce. Subcommittee on Health and the Environment (Washington, D. C. : United States Government Printing Office, 1977)
Serial no.96-153
Keywords: Telecommunication systems; Digital communication systems; Computer networks