Needham, Joseph <br/><br/>
Heavenly clockwork  the great astronomical clocks of medieval China 
by Joseph Needham, Wang Ling and Derek J. De Solla Price. 
 - Cambridge  Cambridge University Press  1960 
 - xv, 253 p.: ill.; 25 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy Horology  Science - China. 
<br/><br/><label>Dewey Class. No.: </label>681.113  / N37H