CLASP Handlist Book: Malcom Parkes, Pause and Effect: An Introduction to the History of Punctuation in the West (Ashgate: 1992), 27, 69 Manuscript references in: St. Petersburg, Russian National Library, Q. v. I. 18 St. Petersburg, Russian National Library, Q. v. I. 18 St. Petersburg, Russian National Library, Q. v. I. 18