International Union of Geological Sciences
The International Union of Geological Sciences (IUGS) is an international non-governmental organization devoted to international cooperation in the field of geology. Provided by Wikipedia-
121Published 1989Moskva : Vses. nauchno-issl. in-t ėkonomiki mineralʹnogo syrʹ︠i︡a i geologorazvedochnykh rabot, 1989.167 p. : ill. ; 22 cm.“...International Geological Congress Washington, D.C....”