TY  - BOOK
AU  - Burkhardt, G. B.
ED  - International Astronomical Union.
TI  - Astronomy and astrophysics abstracts. - Vol 50A. literature 1989, part 2
PY  - 1990///
CY  - Berlin
PB  - Springer-Verlag, 
KW  - Astronomy
KW  - Abstracts
KW  - Astrophysics
N1  - Some volumes issued in parts called A and B; each vol. covers literature for part of year, with final vol. covering pt. 1 of 2000.
ER  -