Gaffney, Timothy R., <br/><br/>
Secret spy satellites : America's eyes in space / 
Timothy R. Gaffney. 
 - 48 pages :  colour illustrations ;  24 cm. 
 - Countdown to space .
 - Countdown to space. .
<br/><br/>Includes bibliographical references (pages 45-46) and index. 
<br/><br/> History of the development of spy satellites beginning with the Corona in the 1950s; includes information about space surveillance over the Soviet Union and secrecy of the program. 
<br/><br/><label>ISBN: </label>0766014029 9780766014022 
<br/><br/><label>LCCN: </label>99050465 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Space surveillance--Juvenile literature
<br/><br/><label>LC Class. No.: </label>UG1520.  / G34 2000 
<br/><br/><label>Dewey Class. No.: </label>327.12