Relation: ‪Petroleum County‬ (‪2793062‬)

Relation: Petroleum County (2793062)

fixing end_dates on Newberry AHCB county chrono relations

license	CC0-1.0
name	Petroleum County
place	county
source	https://publications.newberry.org/ahcbp/downloads/united_states.html
source:name	Newberry Library Atlas of Historical County Boundaries
start_date	1925-02-22
start_event	PETROLEUM created by petition and election from FERGUS.
type	chronology
wikidata	Q496636
wikipedia	en:Petroleum County, Montana

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