The ore deposits of the United States and Canada

Revision	When	Who	Comment

11	January 5, 2022	ImportBot	import existing book
10	August 11, 2020	MARC Bot	remove fake subjects
9	November 28, 2012	AnandBot	Fixed spam edits.
8	November 26, 2012	Nancy Evans	Edited without comment.
7	August 8, 2012	ImportBot	import new book
6	December 6, 2010	Open Library Bot	Added subjects from MARC records.
5	December 4, 2010	Open Library Bot	Added subjects from MARC records.
4	May 5, 2010	EdwardBot	add Accessible book tag
3	April 28, 2010	Open Library Bot	Linked existing covers to the work.
2	January 31, 2010	WorkBot	add more information to works
1	December 9, 2009	WorkBot	add works page