TY  - BOOK
T1  - The evolution of useful things /
DA  - 1992.
CY  - New York :
AU  - Petroski, Henry.
ET  - 1st ed.
CN  - T212
CN  - T212
PB  - Knopf,
PP  - New York :
PY  - 1992.
ID  - 146063
KW  - Inventions.
KW  - Patents.
SN  - 0679412263
TI  - The evolution of useful things /
ER  -