523.4
C495G
           Chaturvedi, Ram Swaroop
               Grahon-nakshatron ka antarikshiya adhyayan \ Ram Swaroop Chaturvedi - New Delhi : Alankar, 1996.
- Brahmand-vigyan granthmala;no.2 .
139319
                Subjects: Astronomy; Planets-Observations; Artificial satellites; Space stations.