The Chester Beatty Biblical papyri show that Christians began to use the codex, or leaf - book, in place of the unwieldy scroll at a very early date, likely before the end of the first century C.E.
दूसरे में ऐसे कुछ और पन्‍ने जोड़े गए जो बीटी को बाद में मिले थे ।