TY  - BOOK
AU  - Ley,Willy
AU  - Polgreen,John
TI  - Man-made satellites
U1  - 629.13 
PY  - 1958///
CY  - [S.l.]
PB  - Guild Press
KW  - Space flight
KW  - Juvenile literature
KW  - Artificial satellites
ER  -