TY  - BOOK
AU  - Needham, Joseph
AU  - Ling, Wang
AU  - Price, Derek J. De Solla
TI  - Heavenly clockwork: the great astronomical clocks of medieval China
U1  - 681.113 
PY  - 1960///
CY  - Cambridge
PB  - Cambridge University Press
KW  - Astronomy
KW  - Horology
KW  - Science - China
ER  -