00305nam a2200133Ia 45000030006000000080041000060400015000471000015000622450046000772500010001232600009001335460012001420050017001540STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aHart, I.B.  aJames Watt and the history of steam power  aFirst  c1961  aEnglish20220125171130.0