TY  - BOOK
AU  - Gould,David
TI  - How was it done?: the story of human ingenuity through the ages
SN  - 276421922
U1  - 609 H83 1995 
PY  - 1995///
CY  - Pleasantville , New York
PB  - Reader's Digest Association, 
KW  - Technology
KW  - History
N1  - Includes index
ER  -