How to enjoy mathematics with your child.

Revision	When	Who	Comment

9	October 4, 2020	MARC Bot	import existing book
8	December 13, 2011	ImportBot	import new book
7	August 11, 2011	ImportBot	import new book
6	April 27, 2011	OCLC Bot	Added OCLC numbers.
5	August 4, 2010	IdentifierBot	added LibraryThing ID
4	April 16, 2010	bgimpertBot	Added goodreads ID.
3	December 14, 2009	WorkBot	link works
2	August 20, 2008	RenameBot	fix author name
1	April 1, 2008		Imported from Scriblio MARC record.