TY - BOOK ED - Bureau of Indian Standards TI - Summaries of Indian standards for building materials SN - (hbk.) : U1 - 690.021854 SUM 23 PY - 1985///. CY - New Delhi : PB - Bureau of Indian Standards, KW - Building materials KW - Standards KW - India. N1 - SP 21 : 2005 t. p. ER -