Studies in logic

Revision	When	Who	Comment

6	April 3, 2019	MARC Bot	import existing book
5	May 18, 2017	MARC Bot	merge authors
4	November 23, 2011	ImportBot	import new book
3	April 28, 2010	Open Library Bot	Linked existing covers to the work.
2	February 1, 2010	WorkBot	add more information to works
1	December 9, 2009	WorkBot	add works page