TY  - BOOK
AU  - Clark,Ronald William
TI  - The scientific breakthrough: the impact of modern invention 
SN  - 0399111794
PY  - 1974///
CY  - New York, N.Y.
PB  - G. P. Putnam's Sons
KW  - Technology
KW  - History
KW  - Inventions
N1  - Includes index
ER  -