Reduction of 2,4,6-Trinitrotoluene by Clostridium acetobutylicum through Hydroxylamino-Nitrotoluene Intermediates (pp 343-348 )
J.B. Hughes, C.Y. Wang, R. Bhadra, A. Richardson, G.N. Bennett, F.B. Rudolph

Effect of Nitrate-Based Bioremediation on Contaminant Distribution and Sediment Toxicity-Column Study (pp 349-361)
S.R. Hutchins, J.A. Bantle, E.J. Schrock

Relationship of Atmospheric Deposition to the Water Chemistry and Biota of Treehole Habitats (pp 362-368)
C.J. Paradise, W.A. Dunson

Ion-Pair Association of Substituted Phenolates with K⁺ in Octanol (pp 369-376)
T.J. Strathmann, C.T. Jafvert

Identification of Fluoroquinolone Antibiotics as the Main Source of umuC Genotoxicity in Native Hospital Wastewater (pp 377-382)
A. Hartmann, A.C. Alder, T. Koller, R.M. Widmer

Comparison of Two Models for Predicting Bioaccumulation of Hydrophobic Organic Chemicals in the Great Lakes Food Web (pp 383-393)
L.P. Burkhard

Validity of Using Linear Alkylbenzenes as Markers of Sewage Contamination with Interference from Tetrapropylene-based Alkylbenzenes (pp 394-397)
E.Y. Zeng, D. Cheng, A.R. Khan, C.L. Vista

Fate of Adsorbable Organic Halides from Bleached Laundering in Spetic Tank Systems (pp 398-403)
W. Braida, S.K. Ong, W.L. Smith, J.W. McCabe

Biomarker Responses in Cyprinids of the Middle Stretch of the River Po, Italy (pp 404-411)
L. Viganò, A. Arillo, F. Melodia, P. Arlati, C. Monti

Surface Binding of Contaminants by Algae: Consequences for Lethal Toxicity and Feeding Behaviour in Daphnia magna Straus (pp 412-419)
G. Taylor, D.J. Baird, A.M.V.M. Soares

Using a Spiked Sediment Bioassay to Establish a No-Effect Concentration for Dioxin Exposure to the Amphipod Ampelisca abdita (pp 420-424)
T.R. Barber, D.J. Chappie, D.J. Duda, P.C. Fuchsman, B.L. Finley

Identification of the Lampricide 3-Trifluoromethyl-4-Nitrophenol as an Agonist for the Rainbow Trout Estrogen Receptor (pp 425-432)
L.M. Hewitt, L. Tremblay, G.J. Van Der Kraak, K.R. Solomon, M.R. Servos

Digestive Proteases of Lugworm (Arenicola marina) Inhibited by Cu from Contaminated Sediments (pp 433-438)
Z. Chen, L.M. Mayer

Detection of Cytochrome P4501A in Several Species Using Antibody Against a Synthetic Peptide Derived from Rainbow Trout Cytochrome P4501A1 (pp 439-445)
S. Lin, P.L. Bullock, R.F. Addison, S.M. Bandiera

Sex-Steroid and Thyroid Hormone Concentrations in Juvenile Alligators (Alligator mississippiensis) from Contaminated and Reference Lakes in Florida, USA (pp 446-452)
D.A. Crain, L.J. Guillette, Jr., D.B. Pickford, H.F. Percival, A.R. Woodward

Spatial and Temporal Variation in Results of Sea Urchin (Strongylocentrotus purpuratus) Toxicity Tests with Zinc (pp 453-459)
B.M. Phillips, B.S. Anderson, J.W. Hunt

Algal Growth Rate Fluctuations Observed Under Uniform Ambient Test Conditions Using Static and Semi-Continuous Assay Techniques (pp 460-467)
R.B. Benjamin, R. Brown III, M. Fraizer, B.M. Joab, R.E. Casey, S.J. Klaine

Comparisons of Sediment Toxicity with Predictions Based on Chemical Guidelines (pp 468-471)
T.P. O'Connor, K.D. Daskalakis, J.L. Hyland, J.F. Paul, J.K. Summers

Comparative Toxicity of 2,3,7,8-Tetrachlorodibenzo-p-dioxin to Seven Freshwater Fish Species During Early Life Stage Development (pp 472-483)
G.E. Elonen, R.L. Spehar, G.W. Holcombe, R.D. Johnson, J.D. Fernandez, J.E. Tietge, P.M. Cook

Bioaccumulation of Polychlorinated Biphenyls from Sediments to Aquatic Insects and Tree Swallow Eggs and Nestlings in Saginaw Bay, Michigan, USA (pp 484-492)
K.L. Froese, D.A. Verbrugge, G.T. Ankley, G.J. Niemi, C.P. Larsen, J.P. Giesy

Kinetics and Conductivity Parameters of Uptake and Transport of Polychlorinated Biphenyls in the CACO-2 Intestinal Cell Line Model (pp 493-501)
W.J. Dulfer, H.A.J. Govers, J.P. Groten

Sediment Toxicity and Benthic Communities in Mildly Contaminated Mudflats (pp 502-510)
M.G. Nipper, D.S. Roper, E.K. Williams, M.L. Martin, L.F. Van Dam, G.N. Mills

Toxicology of White Phosphorus (P₄) to Ducks and Risk for Their Predators: Effects of Particle Size (pp 511-518)
B.D. Roebuck, S-I. Nam, D.L. MacMillan, K.J. Baumgartner, M.E. Walsh

Effect of Chemical Synergy and Larval Stage on the Toxicity of Atrazine and Alachlor to Amphibian Larvae (pp 519-525)
G.E. Howe, R.Gillis, R.C. Mowbra

Effects of Application Rate on Avian Risk from Granular Pesticides - Short Communication
(pp 526-529)
T.R. Stafford, L.B. Best

Individual-based Risk Estimation for Count Responses (pp 530-533)
A.J. Bailer, K.A. See

Erratum (p 534)

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