%0 Journal Article %A A. G. Laktionov %T Altitude distribution of cloud condensation nuclei in a free atmosphere %J Doklady Akademii Nauk %D 1967 %P 315-318 %V 176 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1967_176_2_a18/ %G ru %F DAN_1967_176_2_a18