Heckmann, Otto <br/><br/>
Theorien der kosmologie 
Otto Heckmann 
 - Berlin  Springer-Verlag  1968 
 - ix, 113p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy and astrophysics thesaurus<br/>Cosmology<br/>Universe
<br/><br/><label>Universal Decimal Class. No.: </label>524.83  / HEC