Asteroids, comets, meteors 1993 : proceedings of the 160th symposium of the International Astronomical Union, held in Belgirate, Italy, June 14-18, 1993 / ed. by A. Milani and M. Di Martino, A. Cellino

Asteroids, comets, meteors 1993 : proceedings of the 160th symposium of the International Astronomical Union, held in Belgirate, Italy, June 14-18, 1993 / ed. by A. Milani and M. Di Martino, A. Cellino