INTERNATIONAL-COLLOQUIUM ON RADIOACTIVE AND STABLE ISOTOPES AND THEIRAPPLICATION IN GEOSCIENCE AND ENVIRONMENTAL INVESTIGATION MINING-ACADEMY-FREIBERG, GERMANY (1991) - PREFACE
J. Pilot et H. Jordan, INTERNATIONAL-COLLOQUIUM ON RADIOACTIVE AND STABLE ISOTOPES AND THEIRAPPLICATION IN GEOSCIENCE AND ENVIRONMENTAL INVESTIGATION MINING-ACADEMY-FREIBERG, GERMANY (1991) - PREFACE, Isotopenpraxis, 28(3-4), 1993, pp. 213-214