Tilanus, R. <br/><br/>
The structure of the spiral Arms in M51 and M83  an observational study 
R. Tilanus                                                   
 - Groningen  Rijksuniversiteit Te Groningen  1959 
 - ix, 128p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy and Astrophysics Thesaurus<br/>Galactic structure<br/>Ph.D. Thesis<br/>Spiral Arms<br/>Spiral Galaxies
<br/><br/><label>Universal Decimal Class. No.: </label>043:524.66  / TIL