A bridgments of Specifications 30,001-35,000 - India. Manager of Publications (Delhi : Manager of Publications, 1955)
Group XXv. cements. Bricks and stone working 1. Bricls. Blocks, slabs, tiles and pottery.2. cement concrete, Plaster Artiticas stone Asphaland Refratory mam facture 3. stone cutting and woalling.