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Dalai, R C and Sahrawat, K L and Myers, R J K (1984) Inclusion of nitrate and nitrite in the Kjeldahl nitrogen determination of soils and plant materials using sodium thiosulphate. Communications in Soil Science and Plant Analysis, 15 (12). pp. 1453-1461. ISSN 0010-3624
Dalai, R C and Sahrawat, K L and Myers, R J K (1984) Inclusion of nitrate and nitrite in the Kjeldahl nitrogen determination of soils and plant materials using sodium thiosulphate. Communications in Soil Science and Plant Analysis, 15 (12). pp. 1453-1461. ISSN 0010-3624