Rohlfs, K <br/><br/>
Lectures on density wave theory 
K. Rohlfs                                                    
 - Berlin  Springer-Verlag  1977 
 - 184p. 
<br/><br/><label>ISBN: </label>3-540-08448-7 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy and astrophysics thesaurus<br/>Density wave theory<br/>Wave theory
<br/><br/><label>Universal Decimal Class. No.: </label>524.7-8  / ROH