TY  - BOOK
AU  - Shaffer, Douglas H.
TI  - Clocks
SN  - No information.
AV  - TS542.S5 
CY  - New York
KW  -  Clocks and watches
KW  -  Horology--History
KW  - Clocks and watches--History
KW  - Manufactures
ER  -