1. Varietal response to lead by lettuce

   • Matt K. John

   OriginalPaper Pages: 133 - 144

2. Environmental impact of radioactive waste management in the nuclear industry

   • Colin R. Phillips
   • H. Lin Pai

   OriginalPaper Pages: 145 - 163

3. Studies on microbiological control of liquid manure handling

   • G. Tamasi

   OriginalPaper Pages: 165 - 170

4. Heavy metals in the lichen Caloplaca aurantia from urban, suburban and rural regions in Israel (a comparative study)

   • Jacob Garty
   • Margalith Galun
   • Nava Zisapel

   OriginalPaper Pages: 171 - 188

5. Influence of clay-solute interactions on aqueous heavy metal ion levels

   • Helen Farrah
   • W. F. Pickering

   OriginalPaper Pages: 189 - 197

6. Atmospheric input and origin of selected elements in Walker Branch Watershed, Oak Ridge, Tennessee

   • A. W. Andren
   • S. E. Lindberg

   OriginalPaper Pages: 199 - 215

7. Photoreactivity of aqueous anionic NO_x ^- with hydrocarbons

   • Gianna L. Petriconi
   • Henry M. Papee

   OriginalPaper Pages: 217 - 224

8. Photoreactivity of aqueous anionic NO_x ^- with hydrocarbons

   • Gianna L. Petriconi
   • Henry M. Papee

   OriginalPaper Pages: 225 - 234

9. The analysis and control of volatile hydrocarbon concentrations (e. g. benzene) during oil bioassays

   • Larry P. Atkinson
   • William M. Dunstan
   • Joseph G. Natoli

   OriginalPaper Pages: 235 - 242

10. Relative sensitivity to lead of a naked green flagellate, Dunaliella tertiolecta

    • J. Stewart

    OriginalPaper Pages: 243 - 247

11. Book reviews

    • Billy M. McCormac

    BookReview Pages: 249 - 250

12. Announcements

    Announcement Pages: 251 - 252