Underground coal gasification

https://www.wikidata.org/wiki/Q2571404

Field Hierarchy

Parent
Chemistry 28.4M papers	Engineering 23.9M papers	Organic chemistry 12.8M papers	Geography 11.1M papers
History 7M papers	Archaeology 6.3M papers	Waste management 1.5M papers	Coal 270k papers
Coal mining 87.6k papers		Coal gasification 7,652 papers
Current
Underground coal gasification 1,340 papers
Child

Trends

Notes

History