Petrography

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

Field Hierarchy

Parent
Biology 36M papers	Chemistry 28.9M papers	Geology 10.4M papers	Paleontology 5.5M papers
Mineralogy 856k papers		Geochemistry 799k papers
Current
Petrography 26.6k papers
Child
Maceral 4,681 papers	Inertinite 2,312 papers	Liptinite 1,084 papers

Trends

Notes

History