United States directory of sources
By: United States International Environmental Referral Center, national focal point of the United Nations Environment Program/International Referral System.
Publisher: Office of Administration, Assistant Administrator for Planning and Management, U.S. Environmental Protection Agency
Published: 1976
Place of publication: Washington
Language: eng
Number of pages: 409
Subjects: United States International Environmental Referral Center -- Directories.; Environmental protection -- United States -- Directories.
Other titles: United Nations Environment Program.; International Referral System.
Notes: "EPA-840-76-007."
Second ed. published in 1977 under title: U.S. directory of environment sources.