TY  - BOOK
AU  - Crutzen, P. J.
AU  - Gerard, J. C
AU  - Zander, R.
TI  - Our changing universe
T2  - Liege international astrophysical colloquium no.28
PY  - 1989///
CY  - Belgique
PB  - University of Liege
KW  - Cosmology
KW  - Universe
ER  -