1. Humic substances and humification rate in a municipal refuse disposed of in a landfill

   • O. Castagnoli
   • L. Musmeci
   • M. Chirico

   OriginalPaper Pages: 1 - 12

2. A case study of forest decline in Western Canada and the adjacent United States

   • Allan N. D. Auclair
   • Hans C. Martin
   • Sherry L. Walker

   OriginalPaper Pages: 13 - 31

3. Information measures for acid precipitation networks

   • John Donald
   • Edward Mcbean

   OriginalPaper Pages: 33 - 52

4. Buffer capacity and lead retention in some clay materials

   • Raymond N. Yong
   • Benno P. Warkentin
   • Rosa Galvez

   OriginalPaper Pages: 53 - 67

5. A field study on factors influencing Cd levels in soils and in grain of oats and winter wheat

   • Jan E. Eriksson

   OriginalPaper Pages: 69 - 81

6. Atmospheric deposition to grassland canopies: Lysimeter budgets discriminating between interception deposition, mineral weathering and mineralization

   • D. Van Dam
   • G. W. Heil
   • B. Heijne

   OriginalPaper Pages: 83 - 101

7. Isolation of amoebae of the genera Naegleria and Acanthamoeba from public fountains in Galicia (N.W. Spain)

   • Esperanza Paniagua Crespo
   • Margarita Marti Mallen
   • Ma Pilar Combarro Combarro

   OriginalPaper Pages: 103 - 111

8. Toxicity (EC₅₀) comparisons of some animal wastes

   • Gian Gupta
   • Peter Kelly

   OriginalPaper Pages: 113 - 117

9. Accumulation and leaching of the fungicide fentin acetate and intermediates in sandy soils

   • J. P. G. Loch
   • P. A. Greve
   • S. van der Berg

   OriginalPaper Pages: 119 - 129

10. Influence of thermal power station effluents on hydrobiology of seawater

    • B. Subramanian
    • S. K. Prabu
    • A. Mahadevan

    OriginalPaper Pages: 131 - 137

11. Adsorption of quaternary ammonium surfactants on Fuller's earth

    • T. Mangialardi
    • A. E. Paolini

    OriginalPaper Pages: 139 - 150

12. Patterns of trace metal concentration and acidity in montane forest soils of the northeastern United States

    • Graham T. Herrick
    • Andrew J. Friedland

    OriginalPaper Pages: 151 - 157

13. Arsenic resistant microorganisms isolated from agricultural drainage water and evaporation pond sediments

    • K. Davis Huysmans
    • W. T. Frankenberger Jr

    OriginalPaper Pages: 159 - 168

14. Effect of the chemical composition of industrial dusts on forest floor organic matter accumulation

    • Władysław Grodziński
    • Jan Greszta
    • Anna Rożen

    OriginalPaper Pages: 169 - 178

15. A comparative study of mercury distribution on the aeolian volcanoes, vulcano and stromboli

    • C. Barghigiani
    • R. Bargagli
    • S. M. Siegel

    OriginalPaper Pages: 179 - 188

16. Temporal changes in metal levels of the lichens Parmotrema praesorediosum and Ramalina stenospora, Southwest Louisiana

    • Dorothy A. Walther
    • Gerald J. Ramelow
    • Michael F. Maroon

    OriginalPaper Pages: 189 - 200

17. Book review

    • T. Viraraghavan

    BookReview Pages: 201 - 201