TY  - BOOK
AU  - Leonard,Jonathan Norton
TI  - Tools of tomorrow
AV  - T47 .L4
U1  - 621.9 
PY  - 1935///
CY  - New York
PB  - The Viking press
KW  - Technology
KW  - Machinery
KW  - Civilization
KW  - History
N1  - Title on two leaves
ER  -