"TECHNOLOGY & ENGINEERING / Environmental / General" . . . . . . "Results of the nation's acid rain program and further considerations"@en . . . "Electronic books"@en . "Electronic books" . . . . . . . . "Acid precipitation : results of the nation's acid rain program and further considerations"@en . "Acid precipitation : results of the nation's acid rain program and further considerations" . . . . . "Acid Precipitation : Results of the Nation's Acid Rain Program and Further Considerations" . . . "Acid deposition." . . "Acid precipitation (Meteorology)" . .