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Item Metadata only Application of continuous flow technique for sequential extraction and for determination of phosphorus in soil and sediment(Mahidol University. Mahidol University Library and Knowledge Center, 2002) Warawut Tiyapongpattana; Duangjai Nacapricha; Juwadee ShiowatanaItem Metadata only Determination of phosphorus in Bray II soil extracts using flow injection technique(Mahidol University. Mahidol University Library and Knowledge Center, 2001) Suwat Pabchanda; Duangjai Nacapricha; Juwadee Shiowatana