00325nam a2200133Ia 4500008004100000082001400041100001600055245002700071250001200098260003900110300001000149600001600159650001600175140224s9999    xx            000 0 und d  a620.17 M6  aRyder, G.H.  aStrength of materials/  a3rd ed.  aS.I. Units LondonbMacmillanc1986  a336p.  aG.H. Ryder   aEngineering