Language
IS 2048 (A) - 1983
IS 2048 (B) - 1983
IS 2048 (C) - 1983
IS 2048 (D) - 1983
IS 2048 (E) - 1983
IS 2048 (F) - 1983
IS 2048 (G) - 1983
IS 2048 (H) - 1983
IS 2048 (J) - 1983