Gabriele Gionti, S. J., Jean-Baptiste Kikwaya Eluo, S.J. <br/><br/>
The Vatican Observatory, Castel Gandolfo: 80th Anniversary Celebration 

 -  Springer  Springer  2018 
<br/><br/><label>ISBN: </label>9783319672052 
<br/><br/><label>Source: </label>EBOOK