World’s Oldest Datable Printed Book वज्रच्छेदिका प्रज्ञापारमितासूत्र is a 16 feet long scroll printed on wood block in 868 CE.
— Subhash Kak (@subhashkak1) June 10, 2019
This earliest datable printed book was the translation of the Diamond Sutra done by Kumarajiva in 401. It is a classic and still widely used. For Kumarajiva, see this:https://t.co/XsX0W17O7V
— Subhash Kak (@subhashkak1) June 11, 2019