Sewage sludge

https://www.wikidata.org/wiki/Q11888968

Field Hierarchy

Parent
Engineering 25.7M papers	Environmental science 9M papers	Waste management 1.6M papers	Environmental engineering 997k papers
Sewage treatment 122k papers		Sewage 61.9k papers
Current
Sewage sludge 30.3k papers
Child

Trends

Notes

History