Hubble,Edwin. <br/><br/>
The Observational Approach to Cosmology  Textual Documents 

 - 1937. 
 - London:  Oxford at the University Press,  1937. 
 - ix;68p.:  01100. 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Cosmology,The Role of the Red Shifts,Possible Worlds.
<br/><br/><label>Dewey Class. No.: </label>523.1 HUB