Kyodai shiki Card
In 1970, B6 size indexcard become popular among Japanese researchers after Umesao’s book.
Now, the B6 indexcard is called as “京大式カード (Kyodai shiki Card, Kyoto-University-style card), and officially sold by the Correct.
In 1970, B6 size indexcard become popular among Japanese researchers after Umesao’s book.
Now, the B6 indexcard is called as “京大式カード (Kyodai shiki Card, Kyoto-University-style card), and officially sold by the Correct.