TY  - BOOK
AU  - Jones F D ed
ED  - 
TI  - Ingenious mechanism for designers and inventors 1954-1956
U1  - 621.815 
PY  - 1954///
CY  - New Yourk
PB  - Indusrtial Press
KW  - Ingenious Mechanism
N1  - Vol.3, Edited by Horton H L
ER  -