The Hall of Heavenly Records : Korean astronomical instruments and clocks, 1380-1780 / Joseph Needham ... [et al.].

xxii, 201 p. :, 25 cm.

QB85.8 .H35 1986 c.2

Astronomical clocks -- Korea -- Soungwan -- History., Astronomical instruments -- Korea -- Soungwan -- History.

New York :: Cambridge University Press, 1986.

Book