TY  - BOOK
AU  - Derry,T.K.
AU  - Williams,Trevor Illtyd
TI  - A short history of technology from the earliest times to A.D. 1900
U1  - 620 
PY  - 1973///
CY  - Oxford
PB  - Clarendon Press
KW  - Technology
KW  - History
N1  - Includes bibliography
ER  -