2 Commits (9bc5f55c4ee17dfb785a5680a969fe767e7d7322)

Author	SHA1	Message	Date
Sam Frances	d51ffc37f5	Add John Guttag textbook to paid books in extras	2016-08-09 12:38:12 +01:00
Eric Douglas	1dbd5f321f	Update and rename books.md to paid-books.md ... #333	2016-06-30 07:24:48 -03:00