00369nam a2200145Ia 450000500170000000800460001703700120006304000200007504100130009508400210010810000150012924500280014426000420017230000090021420250508150742.0008  250505s9999    xx            000 0 eng d  aTextual  aFEDLbengcFEDL  aeng2eng  a510.1, SAWqFEDL  aSawyer W W 0aMathematician's delight  aHarmondsworthbPenguin Book Ltdc1950  a238p