Maceral

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

Field Hierarchy

Parent
Biology 36M papers	Chemistry 28.9M papers	Engineering 25M papers	Geography 13.2M papers
Organic chemistry 12.9M papers	Geology 10.4M papers	History 8M papers	Archaeology 6.9M papers
Paleontology 5.5M papers		Waste management 1.6M papers
Current
Maceral 4,681 papers
Child
Inertinite 2,312 papers		Liptinite 1,084 papers

Trends

Notes

History