Baikal as a natural laboratory for global change = : Baĭkal-prirodnaia laboratorii︠a︡ dli︠a︡ issledovanii︠a︡ izmeneniĭ okruzhai︠u︡shcheĭ sredy i klimata : Irkutsk, Russia, May 11-17, 1994 = Irkutsk, Rossii︠a︡, 11-17 mai︠a︡ 1994 : abstracts = tezisy