TY  - BOOK
AU  - DAVID Paul A
TI  - Technical choice innovation and economic growth :  Essay on Americal and British experience in the nineteenth century   
SN  - 0521098750
U1  - XogF.30m73.N75, L5/SC 
PY  - 1975///
CY  - New York
PB  - Cambridge university press       
ER  -