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The credit controller's desktop guide
Mason, Roger, (2004)
Lexikon Forderungsmanagement
Pütz, Heinz C., (2006)
Professionelles Forderungsmanagement : rechtliche Grundlagen und Praxis des Inkassogeschäfts
Schneider, Karsten, (2014)
Bookkeeping and accounting
Mason, Roger, (2008)
Finance for non financial managers
Mason, Roger, (2007)
Bookkeeping and accounting in a week
Mason, Roger, (2005)