Needham, Joseph <br/><br/>
Heavenly Clockwork : Great Astronomical Clocks Of Medieval China 

 - Cambridge  Univ. Press  1960 
 - xv, 253p. 21 plates 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MB9v41
<br/><br/><label>Dewey Class. No.: </label>MB9v41  / J0