Secondary treatment

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

Field Hierarchy

Parent
Medicine 50.2M papers	Engineering 25.5M papers	Internal medicine 21M papers	Environmental science 9M papers
Surgery 7.7M papers	Waste management 1.6M papers	Environmental engineering 991k papers	Wastewater 249k papers
Sewage treatment 121k papers		Effluent 110k papers
Current
Secondary treatment 827 papers
Child

Trends

Notes

History