Direct/delayed response project : future effects of long-term sulfur deposition on surface water chemistry in the Northeast and southern Blue Ridge province
"A contribution to the National Acid Precipitation Assessment Program."
"July 1989."
"EPA/600/3-89/061a ... EPA/600/3-89/061d."
Includes bibliographical references.
Also available via Internet from the EPA web site.
Vol. 1. Executive summary, project approach, and data sources -- v. 2. Level I and level II analyses -- v. 3. Level III analyses and summary of results -- v. 4. Appendices