%0 Journal Article %A G. I. Voitov %A A. K. Abduvaliev %A S. M. Ammosov %A A. O. Grinevskii %A R. N. Murogova %A T. G. Orlova %T On the variations of chemical composition of hydrocarbon gases in exhausted seam systems of oil-fields Sel-Rokho (West Fergana) and Abuzy (Krasnodar region) %J Doklady Akademii Nauk %D 1990 %P 1085-1089 %V 313 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1990_313_5_a13/ %G ru %F DAN_1990_313_5_a13