Shipman, Harry L. <br/><br/>
Humans in space :  21st century frontiers / 
Harry L. Shipman. 
 - New York :  Plenum Press,  c1989. 
 - viii, 351 p. :  ill. 
<br/><br/><label>ISBN: </label>0306431718  
<br/><br/><label>LCCN: </label>90011087     
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronautics.<br/>Outer space--Exploration.