Canada. Ecosystem Sciences and Evaluation Directorate
URI(s)
Variants
Additional Information
Exact Matching Concepts from Other Schemes
Earlier Established Forms
Sources
found: Canadian water quality guidelines for triallate, 1992:t.p. (Canada, Ecosystem Sciences and Evaluation Directorate; Conservation and Protection)
found: NLC 12/23/92(name changed April 1, 1992 from Inland Waters Directorate to Ecosystem Sciences and Evaluation Directorate)
Instance Of
Scheme Membership(s)
Collection Membership(s)
Change Notes
1993-07-22: new
1993-07-26: revised
Alternate Formats