1. Shiberi heiyō nijūmanbun no ichi zu, Maps Index Datasets Stanford University Public content 1942 and 1943. Stanford Geospatial Center. This polygon shapefile is an index to 1:200,000 scale maps of Siberia (Russia), East Asia, titled '西伯利兵要二十万分一圖 - Shiberi heiyō nijūmanbun no ichi z... Stanford Digital Repository.