Jensen, Niels <br/><br/>
Optical and photographic reconnaissance systems 
Niels Jensen                                                
 - New York  John Wiley & Sons  1968 
 - xi, 211p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy and astrophysics thesaurus<br/>Gamma-rays<br/>Solar gamma-rays
<br/><br/><label>Universal Decimal Class. No.: </label>535  / JEN