Maceral

https://www.wikidata.org/wiki/Q1237331

Field Hierarchy

Parent
Biology 36.7M papers	Chemistry 29.4M papers	Engineering 25.6M papers	Geography 13.4M papers
Organic chemistry 13.1M papers	Geology 10.6M papers	History 8.1M papers	Archaeology 7M papers
Paleontology 5.6M papers		Waste management 1.6M papers
Current
Maceral 4,738 papers
Child
Inertinite 2,352 papers		Liptinite 1,100 papers

Trends

Notes

History