Re:Twice as happy customers means half the marketing spend
by padthai on Friday June 23, 2017 @07:56AM
(#14618496)
Abstract algebra is an old field so plenty of good options.I would recommend Abstract Algebra by Dummit and Foote. Clear theory, great examples and good writing:
http://eu.wiley.com/WileyCDA/WileyTitle/productCd-0471433349...