AND K.G.BHATTACHAYYA, T.N. 2014. 2. STATUS OF MACRONUTRIENTS (N_ P AND K) IN SOME SELECTED TEA GROWING SOILS OF SIVASAGAR DISTRICT OF ASSAM_ INDIA By T.N. NATH. INTERNATIONAL RESEARCH JOURNAL OF CHEMISTRY. 7, (Oct. 2014), 12 to 29.