TY  - BOOK
AU  - Hoyle,Fred
TI  - The nature of the universe
PY  - 1950///
CY  - New York, N.Y.
PB  - Harper & Row
KW  - Space sciences
KW  - Science
KW  - Cosmic physics
KW  - Աստղագիտություն
KW  - Astronautics
ER  -