Partial differential equations.

Revision	When	Who	Comment

13	December 4, 2022	ImportBot	import existing book
12	October 18, 2022	ImportBot	import existing book
11	September 29, 2020	MARC Bot	import existing book
10	February 11, 2019	MidwestGeek	Added ISBN
9	November 17, 2018	MARC Bot	import existing book
8	August 18, 2017	Michel T. Talbot	Added new cover
7	July 30, 2014	ImportBot	import new book
6	April 5, 2014	ImportBot	Added IA ID.
5	December 14, 2009	WorkBot	link works
4	June 19, 2009	EdwardBot	fix broken author (step 2)
3	June 19, 2009	EdwardBot	fix broken author (step 1)
2	June 4, 2009	ImportBot	Found a matching record from Promise Item .
1	April 1, 2008		Imported from Scriblio MARC record.