Jones, Bessie Zaban <br/><br/>
The Harvard college observatory  the first four directorships, 1839-1919 
Bessie Zaban Jones and Lyle Giffond Boyd 
 - Cambridge  Harvard University Press  1971 
 - xi, 495p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy and astrophysics thesaurus<br/>Harvard college observatory<br/>Observatories
<br/><br/><label>Universal Decimal Class. No.: </label>520.1  / JON