TY  - BOOK
AU  - Ritchie-Calder,Peter Ritchie
TI  - The evolution of the machine
T2  - The Smithsonian library
AV  - TJ15 .R57 1968
U1  - 620/.009 
PY  - 1968///]
CY  - [New York]
PB  - American Heritage Pub. Co.; book trade and institutional distribution by Van Nostrand
KW  - Machinery
KW  - History
KW  - Local
N1  - Bibliography: p. 154-155
ER  -