00277nam a2200109Ia 4500008004100000020001800041082001500059100002000074245002500094260004000119300000800159190710s9999    xx            000 0 und d  a0-550-20700-7  a511.8 B812  aBrowning, David 0aBusiness calculation  aEdinburghbW & R Chambers Ltdc1987  a212