PMS 2019 Past Paper MCQs, General Knowledge MCQs, PPSC Solved Past Papers MCQsThe United Nations Conference on Environment and Development knew as RIO Summit was held in? Posted on April 12, 2021 by Rana TahirA. 1990 B. 1991 C. 1992 D. 1993Share 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)
