TY  - BOOK
AU  - Needham,Joseph
TI  - The hall of heavenly records: Korean astronomical instruments and clocks, 1380-1780 
SN  - 0521303680 :
U1  - 522.209519 
PY  - 1986///
CY  - Cambridge
PB  - The University Press
KW  - Astronomical instruments
KW  - Korea
KW  - Soungwan
KW  - History
KW  - Astronomical clocks
N1  - Title on added t.p.: Chao-hsien "Shu yun kuan" Tien wen i chi yu chi shih chi (Choson "Soungwan" chonmun uigi yo kyesigi); Includes bibliographical references and index
ER  -