TY  - BOOK
AU  - Petrov V
AU  - Sharma B S
TI  - Artificial satellites of the earth
U1  - 629.1388 
PY  - 1960///
CY  - Delhi
PB  - Hindustan Pub
KW  - Earth
KW  - Satellites
KW  - Space flight
N1  - Tr. from Russian
ER  -