TY  - BOOK
AU  - Bertele,Hans von
ED  - Newcomen Society (Great Britain)
ED  - Antiquarian Horological Society.
TI  - The origin of the differential gear and its connection with equation clocks: [text of a lecture] to be read ... 10 October 1956 at a joint meeting [of the Newcomen Society] with the Antiquarian Horological Society
PY  - 1956///]
CY  - [Ticehurst, UK]
PB  - [AHS]
KW  - Gearing
KW  - Clocks and watches
KW  - Design and construction
KW  - Clock (general)
KW  - Equation
KW  - Astro complication
N1  - Typewritten
ER  -