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All Fields
(("biological assessment" OR bioassess OR bioindicat) AND (aquatic OR "water quality")) NOT (toxicity OR histop OR bioaccum OR biomarker OR mitoch OR embryotox OR "muscle tissues" OR xenobio OR "toxic substances" OR bioassay OR food OR mitosis)
Remove constraint All Fields: (("biological assessment" OR bioassess OR bioindicat) AND (aquatic OR "water quality")) NOT (toxicity OR histop OR bioaccum OR biomarker OR mitoch OR embryotox OR "muscle tissues" OR xenobio OR "toxic substances" OR bioassay OR food OR mitosis)
Publish Date
1999
Remove constraint Publish Date: 1999
Topic
Dissolved oxygen
Remove constraint Topic: Dissolved oxygen
Topic
River surveys
Remove constraint Topic: River surveys
Format
Book OR Map
Remove constraint Format: Book <strong class='text-muted constraint-connector'>OR</strong> Map