1. Nijūmanbun no ichi Chishizu, Maps Index Datasets Stanford University Public content 1942. Stanford Geospatial Center. This polygon shapefile is an index to 1:200,000 scale maps of Mongolia, Manchuria and Siberia, titled '二十万分一地誌圖 - Nijūmanbun no ichi Chishizu.’ Thi... Stanford Digital Repository.