Non-solar X- and gamma-ray astronomy :  International Astronomical Union symposium no. 37 held in Rome, Italy, May 8-10, 1969 / 
Ed. by L. Gratton. 
 - Dordrecht , Holland :  D. Reidel Publ. Co.,  1970. 
 - x, 425 p  ill. 
 - Symposium (International Astronomical Union)  No. 37 .
<br/><br/><label>ISBN: </label>9027701601 
<br/><br/><label>Subjects--Topical Terms: </label><br/>X-ray astronomy--Congresses<br/>Gamma ray astronomy--Congresses