TY  - BOOK
AU  - Barkus,Sarah J
AU  - Barkus,Homer A.
AU  - Tanner,Russell E.
TI  - Know the escapement
PY  - 1943///]
CY  - San Diego, Calif.
PB  - The Neyenesch printers, Incorporated
KW  - Clocks and watches
KW  - Escapements
KW  - fast
KW  - EscapmentScie
KW  - USA
KW  - Pin lever
KW  - Adjust escapement
KW  - Watch (general)
ER  -