Crowther, J.G. . <br/><br/>
An Outline of the Universe /  Textual Documents 
J.G.Crowther. 
 - 1st ed. / 
 - New York :  Penguin Books Ltd ,  1931. 
 - 373p. ;  18cm. 
<br/><br/><label>Subjects--Index Terms: </label>Universe Astronomy G-Mathematics 
<br/><br/><label>Dewey Class. No.: </label>523.1  / C 886 Ou