Url
	https://chloe.cnr.it/s/DHeLO/item/16572
Resource class
	bibo:AcademicArticle
Creator
	English, Paul Ward
Date
	1968
Language
	eng
Is Part Of
	Proceedings of the American Philosophical Society
Issue
	3
Pages
	170-181
Uri
	http://www.jstor.org/stable/986162
Volume
	112
Homepage
	https://www.zotero.org/groups/5293298/bidiar/items/GH3IZCWUitem-list

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