00389nam a2200145Ia 450000500170000000800460001703700120006304000200007504100130009508400230010810000160013124500460014726000400019330000100023320250508154112.0008  250505s9999    xx            000 0 eng d  aTextual  aFEDLbengcFEDL  aeng2eng  a621.109, HARqFEDL  aHart Ivor B 0aJames watt and the history of steam power  aNew York, USAbCollier Books c1949  a159p.