%0 Journal Article %A V. I. Bogdanov %A I. I. Sorokina %T Evaluation of the density of crystalline rocks of the earth-crust, varying with depth in the region of the Kovdorsky alkaline-ultrabasic massive (Kola geophysic polygon) %J Doklady Akademii Nauk %D 1967 %P 1313-1316 %V 173 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1967_173_6_a16/ %G ru %F DAN_1967_173_6_a16