TY  - BOOK
ED  - Copper development association. [from old catalog]
TI  - Copper and copper alloy springs
U1  - 669.3 
PY  - 1944///]
CY  - London
PB  - Copper development association
KW  - Springs (Mechanism)
N1  - 0; 0; 0; 669_300000000000000_COP; 0; 0; 0; 669_300000000000000_COP
ER  -