IS : 3951 ( P II)-1975 specification for hollow clay tile for floor & roofs
I. S. I. Manak Bhawan
IS : 3951 ( P II)-1975 specification for hollow clay tile for floor & roofs - Manak Bhavan Delhi I. S.I 1975 - 10
/ ISI
IS : 3951 ( P II)-1975 specification for hollow clay tile for floor & roofs - Manak Bhavan Delhi I. S.I 1975 - 10
/ ISI