TY - BOOK ED - OECD Nuclear Energy Agency. TI - Long-term observation of geological environment : needs and techniques : proceedings of an NEA workskhop, Helsinki, Finland, 9-11 September 1991 =: Observation a long terme du milieu geologique : besoins et techniques : compte rendu d'une reunion de travail de l'AEN T2 - OECD documents SN - 9264039708 PY - 1993/// CY - Paris PB - OECD KW - Radioactive waste disposal in the ground KW - Congresses KW - Hydrogeology KW - Geology, Structural N1 - Includes bibliographical references ER -