1. Black holes ]CD[
Author: Nardo, Don, by Don Nardo
Library: Library and Documentation Center of Kurdistan University (Kurdistan)
Subject: Juvenile literature ، Black holes )Astronomy(,، Black holes )Astronomy(
Classification :
QB843
.
B55
N37
]
CD
[
2. How did we find out about black holes? /
Author: Isaac Asimov ; illustrated by David Wool
Library: Center and Library of Islamic Studies in European Languages (Qom)
Subject: Black holes (Astronomy)-- Juvenile literature
Classification :
QB843
.
B55
A85
1978
