TY  - BOOK
T1  - The scientific breakthrough :the impact of modern invention /
DA  - 1974.
CY  - New York :
AU  - Clark, Ronald
ET  - 1st American ed.
CN  - T19
CN  - T19
PB  - Putnam,
PP  - New York :
PY  - 1974.
N1  - Includes index.
ID  - 229642
KW  - Technology
KW  - Inventions
SN  - 0399111794
TI  - The scientific breakthrough :the impact of modern invention /
ER  -