00345nam a2200121Ia 450000500170000000800410001708200120005810000200007024500560009026000280014630000090017465000400018320240814115907.0240813s9999||||xx |||||||||||||| ||und||  a609 CAL  aCalder, Ritchie 0aInheritors : the story of man and the world he made  aLondonbHeinemannc1961  a345p  aApplied sciences/Technology History