Air quality data for nonmetallic inorganic ions
Subtitle: nitrate and sulfate for 1977 and 1978 from the National Air Surveillance Networks
By: Gary F. Evans ... [et al.]
Contributors: Evans, Gary F; Environmental Monitoring Systems Laboratory (Research Triangle Park, N.C.)
Publisher: U.S. Environmental Protection Agency, Environmental Monitoring Systems Laboratory; Center for Environmental Research Information [distributor]
Published: 1981
Place of publication: Research Triangle Park, NC; Cincinnati, OH
Language: eng
Subjects: Air quality -- United States; Nitrates; Sulfates
Notes: Caption title

At head of title: Project summary

"Sept. 1981."

"EPA-600/S4-81-074."