URI(s)
- http://id.loc.gov/authorities/subjects/sh85120475
- http://id.loc.gov/authorities/sh85120475#concept
Components
- Fixed-film biological process
Variants
- Fixed-film biological process (Sewage purification)
Broader Terms
Closely Matching Concepts from Other Schemes
Instance Of
Scheme Membership(s)
Collection Membership(s)
Change Notes
- 1986-02-11: new
- 1996-05-29: revised
Alternate Formats
