TY  - BOOK
AU  - Gent,R.H.van
AU  - Leopold,J.H.
ED  - Museum Boerhaave.
TI  - The timekeepers of Leiden Observatory
PY  - 1992///
KW  - Museum Boerhaave
KW  - Catalogs
KW  - Clocks and watches
KW  - Netherlands
KW  - History
KW  - Leiden observatory Boerhaave museum catalog
KW  - Catalog astronomical highgrade precision specific clock
KW  - Watch (general)
ER  -