Rohlfs, K. (Kristen), 1930- <br/><br/>
Lectures on density wave theory 
K. Rohlfs 
 - Berlin  Springer-Verlag  1977 
 - 184 p. : ill. ; 25 cm. 
 - Lecture notes in physics  69 .
<br/><br/>Includes bibliographies and index. 
<br/><br/><label>ISBN: </label>0387084487 
<br/><br/><label>LCCN: </label>77-020939 //r862 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Density wave theory<br/>Galaxies