Asteroids, Comets, Meteors 1993: Proceedings of the 160th Symposium of the International Astronomical Union, Held in Belgirate, Italy, June 14–18, 1993 International Astronomical Union Symposia, nr. 160 Editat de A. Milani et al. 30 iun 1994 Paperback Preț: 394.10 lei 6-8 săpt.