Productivity and technical change

Revision	When	Who	Comment

10	October 4, 2020	MARC Bot	import existing book
9	May 17, 2020	CoverBot	Added new cover
8	July 25, 2019	ImportBot	import existing book
7	June 1, 2019	MARC Bot	import existing book
6	November 15, 2018	MARC Bot	import existing book
5	October 20, 2009	WorkBot	add edition to work page
4	June 19, 2009	EdwardBot	fix broken author (step 2)
3	June 19, 2009	EdwardBot	fix broken author (step 1)
2	June 2, 2009	ImportBot	Found a matching record from Library of Congress .
1	April 1, 2008		Imported from Scriblio MARC record.