X-Ray Stars and Radio Sources

From Author Wars - https://authorwars.com/books/x-ray-stars-and-radio-sources-1982814.html

Overview:

Title: X-Ray Stars and Radio Sources
Author: Isaac Asimov
Year: 1967
Type: Essays

Variant Titles:

1972. Estrelas de raios X e fontes de rádio

Editions/Publications:

Unknown. To the Ends of the Universe (Unknown, Isaac Asimov, Walker & Co., $3.95, 136 pages, Hardcover, Non-fiction)