Central Siberia 1:250,000.
United States.Army Map Service.
Washington,
1955-
Issued in quadrangles 1° of latitude by 2-3° of longitude.
Relief indicated variously by contours, form lines, shading, and spot heights.
Coordinated with Series N502, Western Siberia, and Series N504, Eastern Siberia.
Each sheet includes "Glossary" and "Location diagram."
Some sheets have city maps on versos.
Graphic index in central AMS file.