Analysis of acid precipitation samples collected by state agencies--sampling period January 1993-December 1993Lloyd S. Shepard · First published 1996Open the Tome
Analysis of acid precipitation samples collected by state agencies--sampling period January 1992-December 1992Lloyd S. Shepard · First published 1995Open the Tome
Analysis of acid precipitation samples collected by state agencies--sampling period January 1990-December 1990Lloyd S. Shepard · First published 1993Open the Tome
Analysis of acid precipitation samples collected by state agencies, 1988Lloyd S. Shepard · First published 1990Open the Tome
