00264nam a2200097Ia 4500008004100000082001700041100003100058245002300089260004300112300001100155240817s9999    xx            000 0 und d  a620.04 T20,e  aTaylor.J.E and Wrigley.J.S 0aEngineering design  c1957a Londonb Sir Issac pitman press  a137 p.