1. 1998-07-01 Re: Multi-parameter type classes haskell Simon L Peyton Jon 2. 1998-07-01 Re: Multi-parameter type classes haskell Fergus Henderson 3. 1998-06-30 Re: Multi-parameter type classes haskell Andreas Rossberg 4. 1998-06-30 Multi-parameter type classes haskell Simon L Peyton Jon