TY  - BOOK
AU  - Saul, S.B.
AU  - 
TI  - Technological change: United States and Britain in the nineteenth century
U1  - 338.924(734(42)"18" 
PY  - 1970///
CY  - London
PB  - Methuen
KW  - Technological Change
N1  -  Bibliog P.197-198
ER  -