%0 Journal Article %A F. S. Zakirova %T Age related variation in the specific electric conductivity of minerals and rocks %J Doklady Akademii Nauk %D 1964 %P 1325-1327 %V 154 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1964_154_6_a21/ %G ru %F DAN_1964_154_6_a21