TY - BOOK AU - Indian Standards Institution TI - Methods of Test for Soils: Part - 25 Determination of Silica Sesquioxide Ratio (IS : 2720 (Part 25) - 1982) U1 - IS : 2720 (Part 25) - 1982 PY - 1983/// CY - New Delhi PB - Indian Standards Institution KW - Indian Standard - IT N1 - IS : 2720 (Part 25) - 1982 ER -