Petrography

https://www.wikidata.org/wiki/Q289600

Field Hierarchy

Parent
Biology 34.8M papers	Chemistry 28.4M papers	Geology 9.1M papers	Paleontology 5.3M papers
Mineralogy 815k papers		Geochemistry 744k papers
Current
Petrography 25.6k papers
Child
Maceral 4,538 papers	Inertinite 2,294 papers	Liptinite 1,073 papers

Trends

Notes

History