Secondary treatment

https://www.wikidata.org/wiki/Q22908586

Field Hierarchy

Parent
Medicine 49.4M papers	Engineering 25M papers	Internal medicine 20.6M papers	Environmental science 8.8M papers
Surgery 7.6M papers	Waste management 1.6M papers	Environmental engineering 971k papers	Wastewater 242k papers
Sewage treatment 118k papers		Effluent 108k papers
Current
Secondary treatment 818 papers
Child

Trends

Notes

History