%0 Journal Article
%A N. M. Karavaev
%A R. A. Vener
%A K. I. Koroleva
%T Composition and chemical nature of sapropelic acids
%J Doklady Akademii Nauk
%D 1964
%P 877-879
%V 156
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1964_156_4_a26/
%G ru
%F DAN_1964_156_4_a26