It is difficult to buy the original books of that era now, but there are reprints, and the price is not higher than that of that year. After all, prices are rising sharply now. You can search for books on Dangdang or Zhuo Yue. I'll give you the names of the whole set of old math books. Look at which book this is.

Mathematical story album, interesting mathematics, mathematics series of famous national popular science masters, mathematics lecture album of academicians.