Kennedy, I. R. 1938- Acid soil and acid rain / I.R. Kennedy. - 2nd ed. - New York : J. Wiley, c1992. - xvii, 254 p. : ill. - Research studies in botany and related applied fields . ISBN: 0471934046 Subjects--Topical Terms: Soil acidification.Acid soils.Acid rain--Environmental aspects.Nitrogen cycle.Sulphur cycle.Soil management.