generate questions: From 1525 to 1917 14,503 titles were published in Estonian, as opposed to the 23,868 titles which were published between 1918 and 1940.[citation needed]
In the years between 1918 and 1940 how many Estonian language books were printed? {sep_token} In the roughly four centuries previous to 1918 how many Estonian language books were printed? {sep_token} In what language were 14,503 books published prior to 1918? {sep_token}