1. Long-term monitoring of polychlorinated biphenyls in the Hudson River (New York) using caddisfly larvae and other macroinvertebrates

   • M. A. Novak
   • A. A. Reilly
   • S. J. Jackling

   OriginalPaper Pages: 699 - 710

2. Analysis of polychlorobiphenyl congeners in Wisconsin fish

   • Laura Maack
   • William C. Sonzogni

   OriginalPaper Pages: 711 - 719

3. Polychlorinated biphenyl congeners in sediments, plankton, molluscs, crustaceans, and eel in a freshwater lake: Implications of using reference chemicals and indicator organisms in bioaccumulation studies

   • Ron van der Oost
   • Henk Heida
   • Antoon Opperhuizen

   OriginalPaper Pages: 721 - 729

4. Chronic effects of 2,2′-dichlorobiphenyl on reproduction, mortality, growth, and respiration ofDaphnia pulicaria

   • Scott D. Bridgham

   OriginalPaper Pages: 731 - 740

5. Pesticide and industrial chemical residues at the mouth of the grand, Saugeen and Thames rivers, Ontario, Canada, 1981–85

   • Richard Frank
   • Lloyd Logan

   OriginalPaper Pages: 741 - 754

6. Spatial differences and temporal trends of organochlorine compounds in biota from the northwestern hemisphere

   • Östen Andersson
   • Carl-Eric Linder
   • Ulla Wideqvist

   OriginalPaper Pages: 755 - 765

7. Organochlorine pesticides, polychlorinated biphenyls, and mercury in osprey eggs — 1970–79 — and their relationships to shell thinning and productivity

   • Stanley N. Wiemeyer
   • Christine M. Bunck
   • Alexander J. Krynitsky

   OriginalPaper Pages: 767 - 787

8. Effects of pulp mill effluents on vertebrae of fourhorn sculpin,Myoxocephalus quadricornis, bleak,Alburnus alburnus, and perch,Perca fluviatilis

   • B. -E. Bengtsson
   • A. Bengtsson
   • U. Tjärnlund

   OriginalPaper Pages: 789 - 797

9. Subclinical effects of groundwater contaminants. II. Alteration of regional brain monoamine neurotransmitters by benzene in CD-1 mice

   • Gin C. Hsieh
   • Robert D. R. Parker
   • Raghubir P. Sharma

   OriginalPaper Pages: 799 - 805

10. Tissue distribution and excretion of hexabromobenzene and its debrominated metabolites in the rat

    • Yukihiko Yamaguchi
    • Masahide Kawano
    • Ryo Tatsukawa

    OriginalPaper Pages: 807 - 812

11. Different forms of mineral nitrogen in drinking water and the Balkan nephropathy

    • Zoran Radovanović
    • Dragi Stevanović

    OriginalPaper Pages: 813 - 815

12. Fate and shortterm persistence of the insecticide aminocarb in a New Brunswick (Canada) headwater stream

    • D. C. Eidt
    • G. B. Bacon
    • V. N. Mallet

    OriginalPaper Pages: 817 - 829

13. Early biochemical changes produced by malathion on toad embryos

    • E. A. Rosenbaum
    • A. Caballero de Castro
    • A. M. Pechen de D'Angelo

    OriginalPaper Pages: 831 - 835

14. Flow cytometric analysis of the effects of low-level radiation exposure on natural populations of slider turtles (Pseudemys scripta)

    • John W. Bickham
    • Brian G. Hanks
    • J. Whitfield Gibbons

    OriginalPaper Pages: 837 - 841