Essential calculus

Revision	When	Who	Comment

10	November 15, 2022	ImportBot	import existing book
9	October 9, 2020	MARC Bot	import existing book
8	November 18, 2018	ImportBot	import existing book
7	July 31, 2010	WorkBot	merge works
6	April 16, 2010	bgimpertBot	Added goodreads ID.
5	October 15, 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 1, 2009	ImportBot	Found a matching amazon.com record
1	April 1, 2008		Imported from Scriblio MARC record