TY  - BOOK
AU  - Ley,Willy
TI  - Beyond the solar system
U1  - 523 23
PY  - 1964///
CY  - London
PB  - Sidgwick & Jackson
KW  - Astronomy
KW  - Interplanetary voyages
KW  - Galaxies
N1  - Includes index; Bibliography: p. 103-105
ER  -