X- and gamma-ray astronomy  proceedings of the IAU symposium No.55 held in Madrid, Spain, 11-13 May 1972 
edited by H. Bradt and R. Giacconi 
 - Dordrecht  D. Reidel Publishing  1973 
 - x, 323p. 
 - IAU Symposium; no. 55 .
<br/><br/><label>ISBN: </label>90-277-0303-5 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy and Astrophysics Thesaurus<br/>Gamma ray astronomy<br/>X-ray astronomy
<br/><br/><label>Universal Decimal Class. No.: </label>082.2:52  / IAU-S55