Title: Materialy Zasedanii︠a︡, posvi︠a︡shchennogo Vsemirnomu dni︠u︡ okruzhai︠u︡shcheĭ sredy : 4 ii︠u︡ni︠a︡ 1980 goda /
Publisher: Vsesoi︠u︡znyĭ in-t nauch. i tekhn. informat︠s︡ii,
Year: 1981