The study of comets  pt. 1, proceedings of IAU colloquium No.25 held at Goddard Space Flight center, Greenbelt, Maryland October 28-November 1,1974 
edited by Donn, B....[et al.]                                  
 - Washington  National Aeronautics and Space Administration  1976 
 - xii, 536p. 
 - NASA SP; 393, IAU Colloquium; no. 25 .
<br/><br/> Donated by Mrs. Bappu 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy and Astrophysics Thesaurus<br/>Comets
<br/><br/><label>Universal Decimal Class. No.: </label>523.64(082.2)  / DON