Sponsored by the Japan Chamber of Commerce and Industry Supported by the Japan Soroban Federation "Soroban Proficiency Test Practice Papers" 1st Grade - Japan Soroban Institute - Edited by Chogoro Yamamoto A nostalgic soroban problem book from the Heisei era. Although it is unused, there is some staining and yellowing due to aging, so please consider purchasing only if you understand this. This item will be the last one offered. #Soroban #Soroban #SorobanTest #SorobanProblemBook #HeiseiRetro #SorobanTextbook