Helvey T C <br/><br/>
Moon base : Technical and psychological aspects 

 -  1960 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>65741 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Engineering
<br/><br/><label>Dewey Class. No.: </label>D:480S, K0