Secondary treatment

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

Field Hierarchy

Parent
Medicine 48.2M papers	Engineering 23.9M papers	Internal medicine 20.6M papers	Environmental science 7.7M papers
Surgery 7.6M papers	Waste management 1.5M papers	Environmental engineering 949k papers	Wastewater 240k papers
Sewage treatment 116k papers		Effluent 105k papers
Current
Secondary treatment 797 papers
Child

Trends

Notes

History