1. Survey of farm wells for pesticides residues, Southern Ontario, Canada, 1981–1982, 1984

   • Richard Frank
   • Brian D. Ripley
   • Terrance J. O'Neill

   OriginalPaper Pages: 1 - 8

2. Investigations of pesticide contaminations in rural wells, 1979–1984, Ontario, Canada

   • Richard Frank
   • B. Steve Clegg
   • Heinz E. Braun

   OriginalPaper Pages: 9 - 22

3. Improved methodology for a sea urchin sperm cell bioassay for marine waters

   • Paul A. Dinnel
   • Jeanne M. Link
   • Quentin J. Stober

   OriginalPaper Pages: 23 - 32

4. Mixture Toxicity Indices in acute lethal toxicity tests

   • B. G. E. de March

   OriginalPaper Pages: 33 - 37

5. Assessment of the biological impact of point source discharges employing Asiatic clams

   • Christopher Foe
   • Allen Knight

   OriginalPaper Pages: 39 - 51

6. Toxicity of 3,4,5,3′,4′,5′-hexachlorobiphenyl to mink

   • R. J. Aulerich
   • S. J. Bursian
   • A. C. Napolitano

   OriginalPaper Pages: 53 - 60

7. Aldrin, dieldrin, and mercury profiles in recent lake sediments at the Rocky Mountain Arsenal, Colorado

   • E. P. Bergersen

   OriginalPaper Pages: 61 - 67

8. Worker exposure to, and absorption of, cypermethrin during aerial application of an “ultra low volume” formulation to cotton

   • Graham Chester
   • Larry D. Hatfield
   • O. John Tummon

   OriginalPaper Pages: 69 - 78

9. Changes in the aqueous behavior of parathion under varying conditions of pH

   • S. Warwick Fisher
   • Timothy W. Lohner

   OriginalPaper Pages: 79 - 84

10. Availability and toxicological effects of low levels of biologically bound cadmium

    • H. J. Weigel
    • D. Ilge
    • H. -J. Jäger

    OriginalPaper Pages: 85 - 93

11. Cadmium kinetics in freshwater clams. III. Effects of zinc on uptake and distribution of cadmium inAnodonta cygnea

    • J. Hemelraad
    • H. A. Kleinveld
    • D. I. Zandee

    OriginalPaper Pages: 95 - 101

12. Rutile fibers in surface waters of northern New Jersey

    • John H. Puffer
    • Mark Germine
    • Gerard P. Maresca

    OriginalPaper Pages: 103 - 109

13. Toxicity of jet fuels to several terrestrial insects

    • D. W. Bombick
    • L. G. Arlian
    • J. M. Livingston

    OriginalPaper Pages: 111 - 117

14. Toxicity of N-methyl-4-methoxynaphthalimide, a fluorescent whitening agent

    • Toru Otake
    • Satoshi Aburada
    • Nobuko Ikegami

    OriginalPaper Pages: 119 - 127