The book you read in 2006 couldn't have been Graeber's _Debt_ (which is more informal and opinionated), and it wasn't Ryan-Collins's and Werner's _Where Does Mo

The book you read in 2006 couldn't have been Graeber's _Debt_ (which is more informal and opinionated), and it wasn't Ryan-Collins's and Werner's _Where Does Money Come From_... So what book was it?