代數の初歩　その一　一時方程式の應用問題の解き方 代數の初歩　その一　一時方程式の應用問題の解き方ダイスウノショホ　ソノ1　イチジホウテイシキノオウヨウモンダイノトキカタ

You can search the catalog of 78rpm records stored by Showa-kan. The sound sources and disc images of the 78rpm records listed in the catalog can be viewed using the search terminal in the audio visua...