TY  - BOOK
AU  - Jones,H.Spencer
TI  - The earth as a clock: being the Halley lecture delivered on 5 June 1939 
T2  - The Halley lecture,
PY  - 1939///
CY  - Oxford
PB  - The Clarendon Press
KW  - Time
KW  - Day
KW  - Planets
KW  - Rotation
KW  - fast
KW  - Earth (Planet)
KW  - Astronomy
KW  - United Kingdom
KW  - Timekeeper (general)
ER  -