TY  - BOOK
AU  - Lienhard,John H.
TI  - How invention begins:  : echoes of old voices in the rise of new machines
AV  - T15.L485 2006 
PY  - 2006///
CY  - Oxford 
PB  -  : Oxford University Press, 
KW  - Inventions- History
KW  - History
N1  - Includes bibliographical references
ER  -