00546nam a2200181Ia 4500 IN-BaIIA 211028s9999 xx 000 0 eng d IIA Library Astronomy and astrophysics vol. 52B edited by G. Burkhardt, U. Esser and H. Hefele Berlin Springer-Verlag 1991 vii, 723-1553p. Astronomy 80 Astrophysics 794 Burkhardt, G., ed. Esser, U., ed. 15486 Hefele, H., ed. 12355 BK 10332 10332 0 0 0 0 BAN KAV GEN 1992-03-04 0 11242 2021-11-05 1992-03-04 BK