%0 Journal Article %A P. I. Chalov %A T. V. Tuzova %A V. M. Alekhina %T On pulsed nature of helium and radon content anomalies in some water sources of the North-Tien Shan seismic zone in the period preceding the Kochkor earthquake of 1974 %J Doklady Akademii Nauk %D 1976 %P 1331-1334 %V 231 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1976_231_6_a13/ %G ru %F DAN_1976_231_6_a13