The Nuttall Encyclopedia
A range of mountains which extend NE. from the Altai chain, and run S. of Lake Baikal, near the frontier of China, dividing the basin of the Amur from that of the Lena.
Wood, James, ed. Entry for 'Yablonoi Mountains'. The Nuttall Encyclopedia. https://www.studylight.org/encyclopedias/eng/nut/y/yablonoi-mountains.html. Frederick Warne & Co Ltd. London. 1900.