TY  - BOOK
AU  - Singer, Charles 
AU  - Holmyard, E. J. 
TI  - A history of technology
U1  - 609 
PY  - 1957///
CY  - New York
PB  - Oxford University Press, 
KW  - History
KW  - Technology
N1  - Includes index & bibliographical references
ER  -