IS : 2556 ( PVIII)-1973 specificaton for vitreous sanitary
I. S. I. Manak Bhawan
IS : 2556 ( PVIII)-1973 specificaton for vitreous sanitary - Manak Bhavan Delhi I. S.I 1973 - 6
/ ISI
IS : 2556 ( PVIII)-1973 specificaton for vitreous sanitary - Manak Bhavan Delhi I. S.I 1973 - 6
/ ISI