1. 2013-04-12 Re: [Haskell-beginners] Multi-param type classes and haskell-b Olivier Iffrig 2. 2013-04-12 Re: [Haskell-beginners] Multi-param type classes and haskell-b David McBride 3. 2013-04-12 [Haskell-beginners] Multi-param type classes and type haskell-b Olivier Iffrig