Title: Trudy Vsesoi︠u︡znogo soveshchanii︠a︡ (s mezhdunarodnym uchastiem) "Asteroidnai︠a︡ opasnostʹ", 10-11 okti︠a︡bri︠a︡ 1991 g., S.-Peterburg
Subjects: Collisions with Earth, Asteroids, Congresses, Near-earth asteroids