Search Results       Your search for [author]Roque, Ma. Corazon returned 1 record.           The extraction and characterization of humic substances from Philippine sources part 2: Philippine waters and sediments. by Roque, Ma. Corazon; Subject: Chemistry; Philippine; Sediments; Humic acid; Pulvic acid; Elemental composition; UV and IR spectra.          Add to Book Cart Relevance: 25.94%