PPSC Past Paper ESE General Labour & Human Resource Dept-Afternoon2019 Solved MCQs, General Knowledge MCQs, PPSC Solved Past Papers MCQsWho invented a system of reading and writing for the blind? Posted on April 24, 2021 by Rana TahirA. Louis Braille B. Louis Pasteur C. Sir Humphery Davery D. Halen KellerShare this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on WhatsApp (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on LinkedIn (Opens in new window)
