Zubrin, Robert. <br/><br/>
Entering space :  creating a spacefaring civilization / 
Robert Zubrin. 
 - New York :  Jeremy P. Tarcher/Putnam,  1999. 
 - xiv, 305 pages  coloured illustrations ;  24 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9780874779752 (hardback) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Space colonies.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Outer space--Exploration.
<br/><br/><label>LC Class. No.: </label>TL795.7  / ZUB