Результаты поиска - International Astronomical Union

Close binary stars observation and interpretation : symposium no. 88, held in Toronto, Canada, August 7-10, 1979

“...International Astronomical Union...”

Astrophotography: proceedings of the IAU Workshop, Jena, GDR, April 21-24, 1987 /

Origin of cosmic rays : symposium no. 94, jointly with international Union of Pure and Applied Physics, held in Bologna, Italy, June 11-14, 1980 /