"EPA-600/S3-81-006.""May 1981."At head of title: Project summary.Caption title.Mode of access: Internet
"EPA-600/S2-81-222.""Oct. 1981."At head of title: Project summary.Caption title.Mode of access: Inte...
"EPA-600/S1-81-057.""Sept. 1981."At head of title: Project summary.Caption title.Mode of access: Int...
"EPA-600/S2-81-123.""Aug. 1981."At head of title: Project summary.Caption title.Includes bibliograph...
"EPA-600/S3-81-043.""Aug. 1981."At head of title: Project summary.Caption title.Bibliography: p. 4.M...
"EPA-600/S3-81-041.""Oct. 1981."At head of title: Project summary.Caption title.Mode of access: Inte...
"EPA-600/S1-81-026.""Aug. 1981."At head of title: Project summary.Caption title.Mode of access: Inte...
"EPA-600/S2-81-091.""July 1981."At head of title: Project summary.Caption title.Mode of access: Inte...
"EPA-600/1-81-033.""June 1981."At head of title: Project summary.Caption title.Photocopy.Mode of acc...
"EPA-600/S2-81-088.""July 1981."At head of title: Project summary.Caption title.Mode of access: Inte...
"EPA-600/S2-81-019.""Mar. 1981."At head of title: Project summary.Caption title.Mode of access: Inte...
"EPA-600/S3-81-019.""Mar. 1981."At head of title: Project summary.Caption title.Mode of access: Inte...
"EPA-600/S3-81-023.""May 1981."At head of title: Project summary.Caption title.Mode of access: Inter...
Cover title."B-214926"--1st prelim."GAO/RCED-84-100""June 13, 1984"Mode of access: Internet
"EPA-600/S3-84-050.""May 1984."Distributed to depository libraries in microfiche.At head of title: P...
"EPA-600/S3-81-008.""July 1981."At head of title: Project summary.Caption title.Mode of access: Inte...
"EPA-600/S2-81-222.""Oct. 1981."At head of title: Project summary.Caption title.Mode of access: Inte...
"EPA-600/S1-81-057.""Sept. 1981."At head of title: Project summary.Caption title.Mode of access: Int...
"EPA-600/S2-81-123.""Aug. 1981."At head of title: Project summary.Caption title.Includes bibliograph...
"EPA-600/S3-81-043.""Aug. 1981."At head of title: Project summary.Caption title.Bibliography: p. 4.M...
"EPA-600/S3-81-041.""Oct. 1981."At head of title: Project summary.Caption title.Mode of access: Inte...
"EPA-600/S1-81-026.""Aug. 1981."At head of title: Project summary.Caption title.Mode of access: Inte...
"EPA-600/S2-81-091.""July 1981."At head of title: Project summary.Caption title.Mode of access: Inte...
"EPA-600/1-81-033.""June 1981."At head of title: Project summary.Caption title.Photocopy.Mode of acc...
"EPA-600/S2-81-088.""July 1981."At head of title: Project summary.Caption title.Mode of access: Inte...
"EPA-600/S2-81-019.""Mar. 1981."At head of title: Project summary.Caption title.Mode of access: Inte...
"EPA-600/S3-81-019.""Mar. 1981."At head of title: Project summary.Caption title.Mode of access: Inte...
"EPA-600/S3-81-023.""May 1981."At head of title: Project summary.Caption title.Mode of access: Inter...
Cover title."B-214926"--1st prelim."GAO/RCED-84-100""June 13, 1984"Mode of access: Internet
"EPA-600/S3-84-050.""May 1984."Distributed to depository libraries in microfiche.At head of title: P...
"EPA-600/S3-81-008.""July 1981."At head of title: Project summary.Caption title.Mode of access: Inte...
"EPA-600/S2-81-222.""Oct. 1981."At head of title: Project summary.Caption title.Mode of access: Inte...
"EPA-600/S1-81-057.""Sept. 1981."At head of title: Project summary.Caption title.Mode of access: Int...
"EPA-600/S2-81-123.""Aug. 1981."At head of title: Project summary.Caption title.Includes bibliograph...