Bituminous coal

https://www.wikidata.org/wiki/Q732607

Field Hierarchy

Parent
Chemistry 29.4M papers	Engineering 25.6M papers	Geography 13.4M papers	Organic chemistry 13.1M papers
History 8.1M papers	Archaeology 7M papers	Physical chemistry 3.1M papers	Waste management 1.6M papers
Combustion 391k papers		Coal 293k papers
Current
Bituminous coal 7,854 papers
Child

Trends

Notes

History