000 00457nam a2200145Ia 4500
008 180710s9999 xx 000 0 und d
020 _a255975
082 _a609.73
_bTHO
100 _aThomson, Ross
245 _aStructures of change in the mechanical age: technological innovation in the Unit
260 _aBalmore
_bJohn hopkins uniiversity press
_c2009
300 _axiv,432p.
650 _aTechnological innovations -unied states -history
942 _cS
999 _c80141
_d80141