TY  - GEN
AU  -  Asimov,Isaac
TI  -  Collapsing universe
CY  - London:Hutchinson and Co., 3 Fitzroy Square,1977
KW  - Science
KW  - Astronomy
KW  - Collapsing Universe
KW  - Planets
KW  - White Dwarfs
KW  - Black Holes
ER  -